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IdTitleAuthorsAbstractPictureThematic fieldsRecommenderReviewers▼Submission date
21 Nov 2022
STAGE 1
toto

Revisiting the motivated denial of mind to animals used for food: Replication and extension of Bastian et al. (2012)

Does denial of animal minds explain the "meat paradox"?

Recommended by ORCID_LOGO based on reviews by Brock Bastian, Ben De Groeve, Florian Lange and Sebastian Berger
The psychology of meat-eating offers a fascinating window into moral reasoning, cognition and emotion, as well as applications in the shift toward more sustainable and ethical alternatives to meat consumption. One key observation in this field is the so-called “meat paradox” – the tendency for people to simultaneously eat meat while also caring about animals. One way to resolve this conflict and reduce cognitive dissonance is for people to separate the concept of meat from animals, mentally disengaging from the origins of meat in order to make the act of consumption more ethically acceptable. Another potential explanation is a motivated “denial of mind”, in which people believe that animals lack the mental capacity to experience suffering; therefore, eating an animal is not a harm that the animal will experience. In support of the latter hypothesis, Bastian et al (2012) found that animals judged to have greater mental capacities were also judged to less edible, and that simply reminding meat eaters that an animal was being raised for the purposes of meat consumption led to denial of its mental capacities.
 
Using a large-scale online design in 1000 participants, Jacobs et al. (2022) propose a replication of two studies from Bastian et al. (2012): asking how the perceived mental capabilities of animals relates to both their perceived edibility and the degree of moral concern they elicit, and whether learning that an animal will be consumed influences perceptions of its mental capabilities. Among various exploratory analyses, the authors will also examine whether the perception of animal minds (in animals consumed for meat) varies systematically according to species.
 
The Stage 1 manuscript was evaluated over two rounds of in-depth review. Based on detailed responses to the reviewers' comments, the recommender judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA).
 
URL to the preregistered Stage 1 protocol: https://osf.io/cru4z
 
Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA. 
 
List of eligible PCI RR-friendly journals:
 
References
 
1. Bastian, B., Loughnan, S., Haslam, N., & Radke, H. R. M. (2012). Don’t mind meat? The denial of mind to animals used for human consumption. Personality and Social Psychology Bulletin, 38, 247–256. https://doi.org/10.1177/0146167211424291
 
2. Jacobs, T. P., Wang, M., Leach, S., Loong, S. H., Khanna, M., Chan, K. W., Chau, H. T., Tam, Y. Y. & Feldman, G. (2022). Revisiting the motivated denial of mind to animals used for food: Replication and extension of Bastian et al. (2012), in principle acceptance of Version 2 by Peer Community in Registered Reports. https://osf.io/cru4z
Revisiting the motivated denial of mind to animals used for food: Replication and extension of Bastian et al. (2012) Tyler P. Jacobs, Meiying Wang, Stefan Leach, Siu Ho Loong, Mahika Khanna, Ka Wan Chan, Ho Ting Chau, Yuen Yan Tam, Gilad Feldman<p>This is a scheduled PCI-RR snap shot for a planned project: "Revisiting the motivated denial of mind to animals used for food: Replication and extension of Bastian et al. (2012) ​"</p>Social sciencesChris Chambers Ben De Groeve, Florian Lange, Brock Bastian, Sebastian Berger2022-03-04 04:21:18 View
21 Jun 2022
STAGE 1
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Pathway between Negative Interpretation Biases and Psychological Symptoms: Rumination as a Transdiagnostic Mediator in a Longitudinal Study

Probing the interaction between interpretation bias and repetitive negative thinking in subclinical psychopathology

Recommended by ORCID_LOGO based on reviews by Ariana Castro and Rita Pasion
Research in clinical psychology has found that interpretation bias (perceiving ambiguous information in a systematically negative or hostile way) and repetitive negative thinking (recurrent, prolonged worry or rumination) are associated with a range of psychopathologies – including depression, anxiety and paranoia – but the complex interplay between them in driving symptomatology is unclear. Here, Chung and Cheung (2022) propose a longitudinal examination of the directional relationship between interpretation bias and psychological symptoms in subclinical depression and paranoia, as well as the potential transdiagnostic mediating role of repetitive negative thinking. Using an online three-wave design, they ask whether the association between negative interpretation biases and psychological symptoms is bidirectional, whether negative interpretation biases are associated with repetitive negative thinking over time, and whether repetitive negative thinking is associated with psychological symptoms over time. They will also test whether negative interpretation biases and psychological symptoms exert reciprocal influences across dimensions through repetitive negative thinking, and whether repetitive negative thinking acts as a transdiagnostic mediator for depression and paranoid thoughts. Overall, the study aims to generate a clearer understanding of the relationship between interpretation biases and subclinical symptomatology, as well as clarifying the role of rumination as a transdiagnostic mechanism that mediates psychopathology.
 
The Stage 1 manuscript was evaluated over two rounds of in-depth review. Based on detailed responses to the reviewers' comments, the recommender judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA).
 
URL to the preregistered Stage 1 protocol: https://osf.io/89n7u (currently under private embargo)
 
Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA. 
 
List of eligible PCI RR-friendly journals:
 
References
 
1. Chung, H.-F. & Cheung, S.-H. (2022). Repetitive negative thinking as a transdiagnostic mediator in the interplay of interpretation biases and psychological symptoms in depression and paranoia: A three-wave longitudinal study, in principle acceptance of Version 4 by Peer Community in Registered Reports. https://osf.io/89n7u
Pathway between Negative Interpretation Biases and Psychological Symptoms: Rumination as a Transdiagnostic Mediator in a Longitudinal StudyChung, Ho-Fung, Cheung, Sing-Hang, <h4>​Background</h4> <p>The association between interpretation biases and content-relevant symptoms have been well-established but no studies have investigated their cause-and-effect relationship in a prospective longitudinal design. To date, the...Social sciencesChris Chambers Ariana Castro, Rita Pasion2022-02-17 05:36:23 View
28 Mar 2024
STAGE 1
toto

Working memory performance in adverse environments: Enhanced, impaired, or intact?

A closer look at working memory changing with adversity

Recommended by ORCID_LOGO based on reviews by Kathryn Bates and 1 anonymous reviewer
Adverse environments involving threat, uncertainty, deprivation and stress can cause significant and long-lasting harm to cognition and development. In this Stage 1 protocol, Vermeent and colleagues (2024) aim to simultaneously test with a single paradigm and statistical model for findings from previous studies showing that human working memory capacity is impaired in adverse environments, as well as other evidence suggesting that adversity may actually enhance updating of working memory. Furthermore, they will also investigate whether working memory is related to each of the adversity types: threat, deprivation, and unpredictability.
 
The findings of this study should help clarify how working memory functions in combination with adversity, and will provide insight into the development of better interventions and training methods for optimal performance in a variety of environments.
 
The manuscript was reviewed by two experts and the recommender. Following two rounds of peer review, and based on detailed responses to the reviewers' comments, I, the recommender, judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA).
 
URL to the preregistered Stage 1 protocol: https://osf.io/dp7wc
 
Level of bias control achieved: Level 3. At least some data/evidence that will be used to the answer the research question has been previously accessed by the authors (e.g. downloaded or otherwise received), but the authors certify that they have not yet observed ANY part of the data/evidence.
 
List of eligible PCI RR-friendly journals:
 
References

1. Vermeent, S., Schubert, A.-L., DeJoseph, M. L., Denissen, J. J. A, van Gelder, J.-L. & Frankenhuis, W. E. (2024). Working memory performance in adverse environments: Enhanced, impaired, or intact? In principle acceptance of Version 2 by Peer Community in Registered Reports. https://osf.io/dp7wc
Working memory performance in adverse environments: Enhanced, impaired, or intact?Stefan Vermeent, Anna-Lena Schubert, Meriah L. DeJoseph, Jaap J. A. Denissen, Jean-Louis van Gelder, Willem E. Frankenhuis<p>Decades of research have shown that adversity tends to lower working memory (WM) performance. This literature has mainly focused on impairments in the overall capacity to hold information available in WM for further processing. However, some re...Social sciencesYuki YamadaAnonymous, Kathryn Bates2023-10-30 15:11:48 View
09 Feb 2023
STAGE 1
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The Medusa effect: A registered replication report of Will, Merritt, Jenkins, and Kingstone (2021)

Looking (again) at Medusa: does pictorial abstraction influence mind perception?

Recommended by ORCID_LOGO based on reviews by Alan Kingstone, Brittany Cassidy and 3 anonymous reviewers
The Medusa effect is a recently described phenomenon in which people judge a person to be more mindful when they appear as a picture than as a picture within a picture. Across a series of experiments, Will et al. (2021) reported that at higher levels of abstraction, images of people were judged lower in realness (how real the person seemed), experience (the ability to feel) and agency (the ability to plan and act), and also benefited less from prosocial behaviour. The findings provide an intriguing window into mind perception – the extent to which we attribute minds and mental capacities to others.
 
In the current study, Han et al. (2023) propose a close replication of two experiments from the original report by Will et al. (2021), asking first, whether the level of pictorial abstraction influences ratings of realness, agency and experience, and second, whether it also influences prosocial behaviour as measured in the dictator game (with participants predicted to allocate more money to recipients presented as pictures than as pictures within pictures). In the event of a non-replication using the original materials, the authors will further repeat the experiments using newly generated stimuli that are better matched for cultural context and more tightly controlled along various dimensions.
 
The Stage 1 manuscript was evaluated over two rounds of in-depth review. Based on detailed responses to the reviewers' comments, the recommender judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA).
 
URL to the preregistered Stage 1 protocol: https://osf.io/xj46z
 
Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA. 
 
List of eligible PCI RR-friendly journals:
 
References
 
1. Will, P., Merritt, E., Jenkins, R., & Kingstone, A. (2021). The Medusa effect reveals levels of mind perception in pictures. Proceedings of the National Academy of Sciences, 118(32), e2106640118. https://doi.org/10.1073/pnas.2106640118
 
2. Han, J., Zhang, M., Liu, J., Song, Y. & Yamada, Y. (2023).The Medusa effect: A registered replication report of Will, Merritt, Jenkins, and Kingstone (2021), in principle acceptance of Version 2 by Peer Community in Registered Reports. https://osf.io/xj46z
The Medusa effect: A registered replication report of Will, Merritt, Jenkins, and Kingstone (2021) Jing Han, Minjun Zhang, Jiaxin Liu, Yu Song, Yuki Yamada<div>The medusa effect refers to the tendency of people to evaluate a "picture of a person" as more mindful than a "picture of a picture of a person". This phenomenon is strikingly intriguing because it suggests that when people evaluate the human...Social sciencesChris ChambersAnonymous, Alan Kingstone, Anonymous, Anonymous2022-08-18 09:50:35 View
13 Nov 2023
STAGE 2
(Go to stage 1)
toto

Convenience Samples and Measurement Equivalence in Replication Research

Data from students and crowdsourced online platforms do not often measure the same thing

Recommended by ORCID_LOGO based on reviews by Benjamin Farrar and Shinichi Nakagawa

Comparative research is how evidence is generated to support or refute broad hypotheses (e.g., Pagel 1999). However, the foundations of such research must be solid if one is to arrive at the correct conclusions. Determining the external validity (the generalizability across situations/individuals/populations) of the building blocks of comparative data sets allows one to place appropriate caveats around the robustness of their conclusions (Steckler & McLeroy 2008).

In the current study, Alley and colleagues (2023) tackled the external validity of comparative research that relies on subjects who are either university students or participating in experiments via an online platform. They determined whether data from these two types of subjects have measurement equivalence - whether the same trait is measured in the same way across groups.

Although they use data from studies involved in the Many Labs replication project to evaluate this question, their results are of crucial importance to other comparative researchers whose data are generated from these two sources (students and online crowdsourcing). The authors show that these two types of subjects do not often have measurement equivalence, which is a warning to others to evaluate their experimental design to improve validity. They provide useful recommendations for researchers on how to to implement equivalence testing in their studies, and they facilitate the process by providing well annotated code that is openly available for others to use.

After one round of review and revision, the recommender judged that the manuscript met the Stage 2 criteria and awarded a positive recommendation.

URL to the preregistered Stage 1 protocol: https://osf.io/7gtvf
 
Level of bias control achieved: Level 2. At least some data/evidence that was used to answer the research question had been accessed and partially observed by the authors prior to Stage 1 IPA, but the authors certify that they had not yet observed the key variables within the data that were used to answer the research question AND they took additional steps to maximise bias control and rigour.
 
List of eligible PCI RR-friendly journals:
 
 
References
 
1. Pagel, M. (1999). Inferring the historical patterns of biological evolution. Nature, 401, 877-884. https://doi.org/10.1038/44766
 
2. Steckler, A. & McLeroy, K. R. (2008). The importance of external validity. American Journal of Public Health 98, 9-10. https://doi.org/10.2105/AJPH.2007.126847
 
3. Alley L. J., Axt, J., & Flake J. K. (2023). Convenience Samples and Measurement Equivalence in Replication Research [Stage 2 Registered Report] Acceptance of Version 2 by Peer Community in Registered Reports​. https://osf.io/s5t3v
Convenience Samples and Measurement Equivalence in Replication ResearchLindsay J. Alley, Jordan Axt, Jessica Kay Flake<p>A great deal of research in psychology employs either university student or online crowdsourced convenience samples (Chandler &amp; Shapiro, 2016; Strickland &amp; Stoops, 2019) and there is evidence that these groups differ in meaningful ways ...Social sciencesCorina Logan Alison Young Reusser2023-08-31 20:26:43 View
19 Jan 2024
STAGE 1
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A systematic review of social connection inventories

Improving the measurement of social connection

Recommended by ORCID_LOGO based on reviews by Jacek Buczny, Richard James and Alexander Wilson
This is an ambitious systematic review that uses a combination of quantitative and qualitative methods to make the measurement of the construct of social connection more rigorous. Social connection is a heterogeneous construct that includes aspects of structure, function and quality. Here, Paris et al. (2024) will use predefined methods to create a database of social connection measures, and will assess heterogeneity of items using human coders and ChatGPT. This database will form the basis of a second systematic review which will look at evidence for validity and measurement properties. This study will also look at the population groups and country of origin for which different measures were designed, making it possible to see how far culturally specific issues affect the content of measures in this domain.
 
The questions asked by this study are exploratory and descriptive and so the importance of pre-registration is in achieving clear criteria for how each question is addressed, rather than evidential criteria for hypothesis-testing.
 
The authors responded comprehensively to three reviewer reports. This study will provide a wealth of useful information for those studying social connection, and should serve to make the literature in this field more psychometrically robust and less fragmented.
 
URL to the preregistered Stage 1 protocol: https://osf.io/796uv
 
Level of bias control achieved: Level 3. At least some data/evidence that will be used to the answer the research question has been previously accessed by the authors (e.g. downloaded or otherwise received), but the authors certify that they have not yet observed ANY part of the data/evidence. 
 
List of eligible PCI RR-friendly journals:
 
 
References
 

1. Paris, B., Brickau, D., Stoianova, T., Luhmann, M., Mikton, C., Holt-Lunstad, J., Maes, A., & IJzerman, H. (2024). A systematic review of social connection inventories. In principle acceptance of Version 3 by Peer Community in Registered Reports. https://osf.io/796uv

A systematic review of social connection inventoriesBastien Paris, Debora Brickau, Tetiana Stoianova, Maike Luhmann, Christopher Mikton, Julianne Holt-Lunstad, Marlies Maes, Hans IJzerman<p>Social connection is vital to health and longevity. To date, a plethora of instruments exists to measure social connection, assessing a variety of aspects of social connection like loneliness, social isolation, or social support. For comparabil...Social sciencesDorothy Bishop Alexander Wilson, Jacek Buczny, Richard James2023-07-09 21:33:01 View
19 Apr 2022
STAGE 1
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Is the past farther than the future? A registered replication and test of the time-expansion hypothesis based on the filling rate of duration

Could asymmetrical perceptions about the frequency of past and future events explain the Temporal Doppler Effect?

Recommended by ORCID_LOGO based on reviews by Chris Chambers and 2 anonymous reviewers
The Temporal Doppler Effect is a phenomenon where people subjectively perceive the past to be further away than the future even when both temporal distances are objectively the same from the present moment (Caruso et al., 2013). A common explanation for this phenomenon assumes that our perception of the past and future is based on spatial and temporal analogies (Matlock, Ramscar, & Boroditsky, 2005; Casanto & Boroditsky, 2008) and that the subjective discrepancy is due to people feeling that they are moving towards the future and away from the fast, thus underestimating the temporal distance of the former and overestimating the temporal distance of the latter (Caruso et al., 2013).
 
In the current study, Zhang et al. propose to replicate the Temporal Doppler Effect as tested by Caruso et al. (2013) in study 1 and to test an alternative explanation for the effect in study 2 based on the filled-duration illusion (Thomas & Brown, 1974). This alternative explanation assumes that the subjective discrepancy is based on the difference that the past and the future are filled with events that we can remember or imagine. Because the past has already happened, it is comprised of more events (those that were planned and those that were not), while the future still exists only of events that are currently planned. 
 
The Stage 1 manuscript was evaluated over three rounds of in-depth review. The main changes during the review process involved clarifications and adaptations of the way that the authors will measure the participants’ perception of how full of events the past and the future are, as the originally proposed way measuring this did not have sufficient theoretical or empirical justifications. The authors decided to address this by firstly, clarifying this issue in the stage 1 report so that the reader is aware of the potential shortcomings of this measure, and secondly, by testing a second group of participants with an alternative measure. Based on detailed responses to the reviewers’ comments and edits to the stage 1 report, the recommender judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA). 
 
URL to the preregistered Stage 1 protocol: https://osf.io/d9ec3
 
Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA.
 
List of eligible PCI RR-friendly journals:
 
 
References
 
1. Caruso, E. M., Van Boven, L., Chin, M., & Ward, A. (2013). The temporal doppler effect: When the future feels closer than the past. Psychological Science, 24, 530-536. https://doi.org/10.1177/0956797612458804 
 
2. Casanto, D., & Boroditsky, L. (2008). Time in the mind: Using space to think about time. Cognition, 106, 579-593. https://doi.org/10.1016/j.cognition.2007.03.004
 
3. Matlock, T., Ramscar, M., & Boroditsky, L. (2005). One the experiential link between spatial and temporal language. Cognitive Science, 29, 655-664. https://doi.org/10.1207/s15516709cog0000_17 
 
4. Thomas, E. C., & Brown, I. (1974). Time perception and the filled-duration illusion. Perception & Psychophysics, 16, 449-458. https://doi.org/10.3758/BF03198571 
 
5. Zhang, Q., Masuda, Y., Ueda, K.,Toda, K., & Yamada, Y. (2022). Is the past farther than the future? A registered replication and test of the time-expansion hypothesis based on the filling rate of duration. Stage 1 Registered Report, in principle acceptance of Version 3 by Peer Community in Registered Reports. https://osf.io/d9ec3
Is the past farther than the future? A registered replication and test of the time-expansion hypothesis based on the filling rate of durationQinjing Zhang, Yoshitaka Masuda, Kohei Ueda, Kodai Toda, Yuki Yamada<p>People sometimes feel events to be psychologically closer while farther at other times. Caruso et al. (2013) reported the Temporal Doppler Effect (TDE) in which people feel that the past is farther than the future, despite an equivalent objecti...Social sciencesLjerka Ostojic2021-06-14 16:04:02 View
24 Sep 2021
STAGE 1
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Phenomenological Strands for Gaming Disorder and Esports Play: A Qualitative Registered Report

How does the phenomenology of "gaming disorder" differ from intensive but non-pathological videogame play?

Recommended by ORCID_LOGO based on reviews by Malte Elson, Peter Branney and Michelle Carras

In this Stage 1 Registered Report, Karhulahti and colleagues (2021) propose a qualitative, interview-based study of videogame play, with the central aim to understand key phenomological differences between gaming behaviour that is associated with vs. without health problems. This question is particularly important given the recent inclusion of "gaming disorder" in the WHO's International Statistical Classification of Diseases and Related Health Problems (ICD).

In recent years, the validity of "gaming disorder" as an identifiable mental illness has been controversial (e.g. Van Rooij et al, 2018), as has the debate concerning purported harms or benefits of gaming for mental health. This Stage 1 manuscript describes a rigorous qualitative investigation that should provide new insights on this question, and will also include a longitudinal component to examine changes in phenomonology over time, as well as an examination of the extent to which the phenomonology of gaming is reflected in the experiences of medical experts such as doctors, nurses, and therapists who have worked with gaming-related health problems.

More broadly, the manuscript breaks new ground for Registered Reports, being one of the first to focus on qualitative methods, while also making use of the Programmatic submission track in which the approved Stage 1 manuscript is intended to produce two Stage 2 manuscripts focusing on different elements of the project.

Three expert reviewers with a variety of field-specialist and qualitative methodological expertise assessed the Stage 1 manuscript over two rounds of in-depth review. Following revision, the reviewers and recommender agreed that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA). 

URL to the preregistered Stage 1 protocol: https://osf.io/a2rwg

Level of bias control achieved: Level 4. At least some of the data/evidence that will be used to answer the research question already exists AND is accessible in principle to the authors (e.g. residing in a public database or with a colleague), BUT the authors certify that they have not yet accessed any part of that data/evidence.

List of eligible PCI RR-friendly journals:

References

  1. Karhulahti V-M, Siutila M, Vahlo J, Koskimaa R (2021) Phenomenological Strands for Gaming Disorder and Esports Play: A Qualitative Registered Report. PsyArXiv preprints, Stage 1 preregistration, in principle acceptance of version 1 by Peer Community in Registered Reports. https://doi.org/10.31234/osf.io/q53jz
  2. van Rooij AJ, Ferguson CJ, Carras MC, Kardefelt-Winther D, Shi J, Aarseth E, Bean AM, Bergmark KH, Brus A, Coulson M, Deleuze J, Dullur P, Dunkels E, Edman J, Elson M, Etchells PJ, Fiskaali A, Granic I, Jansz J, Karlsen F, Kaye LK, Kirsh B, Lieberoth A, Markey P, Mills KL, Nielsen RKL, Orben A, Poulsen A, Prause N, Prax P, Quandt T, Schimmenti A, Starcevic V, Stutman G, Turner NE, Looy J van, Przybylski AK (2018) A weak scientific basis for gaming disorder: Let us err on the side of caution. Journal of Behavioral Addictions, 7, 1–9. https://doi.org/10.1556/2006.7.2018.19
Phenomenological Strands for Gaming Disorder and Esports Play: A Qualitative Registered ReportVeli-Matti Karhulahti, Miia Siutila, Jukka Vahlo, Raine Koskimaa<p style="text-align: justify;">The recent inclusion of gaming disorder in the ICD-11 as a mental disorder has further increased the importance of researching the health spectrum related to gaming. A critical area in this regard is the lack of cla...Medical Sciences, Social sciencesChris Chambers2021-06-16 20:22:24 View
14 Feb 2022
STAGE 1
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Minimal mindfulness of the world as an active control for a full mindfulness of mental states intervention: A Registered Report and Pilot study

Testing the metacognitive basis and benefits of mindfulness training

Recommended by ORCID_LOGO based on reviews by Chris Noone and Julieta Galante

Mindfulness is inherently metacognitive in that it requires monitoring of one’s own thoughts and attention in order to remain on task. Mindfulness practice is especially metacognitive when focused on internal mental states, rather than on the external world. This Registered Report will compare remote training in mindfulness of mental states with remote training in mindfulness of the world, and a wait list control, to test the idea that mindfulness of mental states has an additional metacognitive component, and that this has benefits for (self-reported) mental health. A comparison of participant expectancies between mindfulness conditions will be used to establish whether mindfulness of the world can be considered a true ‘active control’ condition. Additional comparisons will test whether this mindfulness control has benefits over the (inactive) waiting list condition. The study plan is informed by prior research, including pilot data presented in the Stage 1 report, and a sample of up to 300 participants will be tested.

The Stage 1 plan has been evaluated through two round of signed external review, and a further two rounds of minor revisions, with the recommender obtaining specialist advice on key points from a relevant external expert. The recommender has judged that the manuscript now meets all Stage 1 criteria, and has awarded In Principle Acceptance (IPA).

URL to the preregistered Stage 1 protocol: https://osf.io/tx54k

Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA.

List of eligible PCI RR-friendly journals:

References

Lovell, M., & Dienes, Z. (2022). Minimal mindfulness of the world as an active control for a full mindfulness of mental states intervention: A Registered Report and Pilot study, in principle acceptance of version 4 by Peer Community in Registered Reports. https://osf.io/tx54k

Minimal mindfulness of the world as an active control for a full mindfulness of mental states intervention: A Registered Report and Pilot studyMax Lovell, Zoltan Dienes<p>Mindfulness is a continual renewal of non-elaborative attention on an object of focus, without clinging or aversion, and with equanimity. As this requires the capacity to monitor and control the extent to which one is on task, it is a metacogni...Social sciencesRobert McIntosh2021-06-21 16:49:39 View
08 Feb 2022
STAGE 1
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Arithmetic deficits in Parkinson's Disease? A registered report

Getting the numbers right in Parkinson's disease?

Recommended by ORCID_LOGO based on reviews by Pia Rotshtein, Ann Dowker, Stephanie Rossit and 1 anonymous reviewer

Everyday life, including for patients taking different types of medicine, involves dealing with numbers. Even though Parkinson's disease may ordinarily be thought of as primarily being a motor disorder, there is evidence that numerical abilities decline as Parkinson's disease progresses. Further, the brain areas involved in arithmetic operations overlap with the areas that degenerate in Parkinson's disease.

In this Stage 1 Registered Report, Loenneker et al. (2022) will test healthy  controls, Parkinson disease patients with normal  cognition, and Parkinson disease patients with mild cognitive impairment on general working memory tasks as well as arithmetic performance on the four basic  operations (addition, subtraction, multiplication, division). The study aims to test whether or not there is a deficit in each operation, and the relation of any deficits to general working memory capacity.

The Stage 1 manuscript was evaluated over four rounds of review (including two rounds of in-depth specialist review). Based on comprehensive responses to the reviewers' comments, the recommender judged that the manuscript met the Stage 1 criteria and therefore awarded in-principle acceptance (IPA).

URL to the preregistered Stage 1 protocol: https://osf.io/nb5fj

Level of bias control achieved: Level 6. No part of the data or evidence that will be used to answer the research question yet exists and no part will be generated until after IPA.

List of eligible PCI RR-friendly journals:

References

Loenneker, H. D., Liepelt-Scarfone, I., Willmes, K., Nuerk, H.-C., & Artemenko, C. (2022). Arithmetic deficits in Parkinson’s Disease? A Registered Report. Stage 1 preregistration, in principle acceptance of version 4 by Peer Community in Registered Reports. https://osf.io/nb5fj

Arithmetic deficits in Parkinson's Disease? A registered reportHannah D. Loenneker, Inga Liepelt-Scarfone, Klaus Willmes, Hans-Christoph Nuerk, & Christina Artemenko<p>Elderly people and patients with neurodegenerative diseases such as Parkinson’s Disease (PD) immensely rely on arithmetic skills to lead an independent life. Activities such as medication management, financial transactions or using public trans...Life SciencesZoltan Dienes2021-06-29 19:23:53 View