High frequency transcranial random noise stimulation (hf-tRNS) is a relatively novel form of non-invasive brain stimulation, thought to enhance neural excitability and facilitate processing in targeted brain areas. The evidence for the efficacy of hf-tRNS is mixed, so a high-powered test of the proposed facilitatory effects would be of value to the field. This Registered Report will target the human middle temporal complex (hMT+), an area with a well-established critical role in global motion processing. The protocol is adapted from a study by Ghin and colleagues (2018) but focusing on a sub-set of the original experimental conditions and using a fully within-subjects design (n=42). Global motion processing will be operationalised in terms of the coherence threshold for identification of the dominant direction of random-dot motion. The experiment will test the predicted facilitation of contralateral motion processing (reduced coherence threshold) during hf-tRNS to the left hMT+. The specificity of this effect will be tested by comparison to a sham stimulation control condition and an active stimulation control condition (left forehead). By targeting a brain area with a well-established critical role in behaviour, this study will provide important information about the replicability and specificity of the facilitatory effects of hf-tRNS.

 

Following two rounds of in-depth review, the recommender judged that the manuscript met the Stage 1 criteria and awarded in-principle acceptance (IPA).  
 
URL to the preregistered Stage 1 protocol: https://osf.io/bce7u
 
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:
 

 

1. Ghin, F., Pavan, A., Contillo, A., & Mather, G. (2018). The effects of high-frequency transcranial random noise stimulation (hf-tRNS) on global motion processing: an equivalent noise approach. Brain Stimulation, 11, 1263–75.

 

2. Caroll, M. B., Edwards, G. & Baker, C. I. (2022). Replicating the facilitatory effects of transcranial random noise stimulation on motion processing: A registered report, in principle acceptance of Version 7 by Peer Community in Registered Reports. https://osf.io/bce7u

What the best diet is has always been an area of contention. But one thing is clear: Meat is not necessary for health or fitness, and a diet high in plant proteins may well be especially healthy (e.g. Herpich et al., 2022). Further, plant- rather than animal-based diets leave a lower carbon footprint. So what might hold people back from adopting a plant-based diet? One reason is that people may understandably approach their doctor for advice; and the doctor may advise against it, given that many doctors are not well trained in nutrition (Crowley et al., 2019).

Espinosa et al. (2022) conducted a randomised control trial on French general practitioners with 200 doctors given a leaflet and access to an online platform, and 200 controls. The information in the materials concerned the health benefits of plant-based diets, and what nutrients (e.g. B12) may be deficient and what may not be. Attitudes towards and knowledge about plant-based diets was assessed. On a scale of 0-100% expressing whether they would advise for or against (0 = not at all, 100 = absolutely), the intervention shifted attitudes making them more positive about plant based diets by 17 percentage points. However, knowledge of specifically what is worth testing for (e.g. is zinc deficiency more probable or not?) did not change much. The research shows just what can be achieved by a small leaflet (shifting attitudes) and what may require more extensive training (knowledge of relevant medical practice).

The Stage 2 manuscript was evaluated over one round of in-depth review. Based on the responses to the reviewers' comments, 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/fc9gp
 
Level of bias control achieved: Level 6. No part of the data or evidence that was used to answer the research question existed prior to Stage 1 in-principle acceptance.
 
List of eligible PCI RR-friendly journals:

 

1. Crowley, J., Ball, L. & Hiddink, G. J. (2019.) Nutrition in medical education: a systematic review. Lancet Planetary Health. 3, e379–e389. https://doi.org/10.1016/S2542-5196(19)30171-8

 

2. Herpich, C., Müller-Werdan, U., & Norman, K. (2022). Role of plant-based diets in promoting health and longevity. Maturitas, 165, 47-51. https://doi.org/10.1016/j.maturitas.2022.07.003

 

3. Espinosa, R., Arpinon, T., Maginot, P., Demange, S. & Peureux, F. (2022). Removing barriers to plant-based diets: assisting doctors with vegan patients, acceptance of Version 2 by Peer Community in Registered Reports. https://osf.io/kq6eh?view_only=66eab29c7acb4aebbcec4631cbcb9217

For centuries, the relationship between creativity and mental health has been a subject of fascination, propelled by the impression that many of the most famous artists in history likely suffered from mood disorders or other mental illnesses. However, with the advent of psychological science – including more precise and diagnostic clinical measures – the empirical evidence for an association between creativity and depressive symptoms has been mixed, with some studies suggesting a positive relationship and others showing either no effect or indicating that the link, if there is one, may be driven by other personality characteristics (Verhaeghen et al., 2005).

 

In the current study, Lam and Saunders will use an online design in 200 participants to ask whether creativity is associated with higher depressive traits, and further, whether that relationship depends on two additional variables that could explain an observed positive correlation: self-reflective rumination (repetitive thoughts that maintain a negative mood state) and the frequency with which individuals engage in reappraisal (a regulation strategy that involves reinterpreting an event or situation to diminish its negative impact). If justified by the main confirmatory findings, the authors will also explore the moderating role of gender and how any observed associations are reflected in more fine-grained measures of creativity. The results promise to shed light on not only the basic question of whether creativity is related to depressive traits, but the extent to which that association depends on related determinants of mental health.

 

Following two rounds of in-depth review, the recommender judged that the manuscript met the Stage 1 criteria and awarded in-principle acceptance (IPA).  

 

URL to the preregistered Stage 1 protocol: https://osf.io/yub7n
 
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. Verhaeghen, P., Joormann, J., & Khan, R. (2005). Why we sing the blues: The relation between self-reflective rumination, mood, and creativity. Emotion, 5(2), 226-232. https://doi.org/10.1037/1528-3542.5.2.226

 

2. Lam, C. Y. & Saunders, J. A. (2022). Relationship between creativity and depression: the role of reappraisal and rumination, in principle acceptance of Version 3 by Peer Community in Registered Reports. https://osf.io/yub7n

Subjective tinnitus is a common disorder in which people experience a persistent sound in the absence of any external source. The underlying causes of tinnitus are debated – although the condition is strongly associated with hearing loss resulting from auditory damage, much remains to be understood about the neural processes that give rise to the phantom perception. Various classes of neurophysiological theories have been proposed, including the “altered gain” model – in which neurons in the auditory pathway increase their responsiveness to compensate for reduced auditory input following hearing loss – and the “noise cancellation” model –  in which disrupted feedback connections from limbic regions are unable to tune out phantom signals. Although these theories account for much observed data, they have not been conclusively supported, and their ability to explain tinnitus is limited by the fact that hearing loss and tinnitus can arise independently and at different times.

 

In the current study, Reisinger et al. (2023) will test an emerging alternative theory based on a Bayesian predictive-coding framework (Sedley et al., 2016) in which the alteration of perceptual priors leads the auditory system to expect a sound that, if functioning normally, it should not expect. Using magnetoencephalography (MEG) in a sample of tinnitus patients (and carefully-matched controls for age, gender, and level of hearing loss), they will ask whether tinnitus is associated with anticipatory brain activation, tuned to the carrier-frequency of an expected auditory stimulus. Specifically, the authors predict that if the predictive-coding framework is correct then individuals with tinnitus should show different regularity-dependent pre-activations of carrier- frequency-specific information compared to the control group, while tone carrier-frequencies should be processed normally in tinnitus patients. They also predict that any such pre-activations should not be related to levels of reported subjective tinnitus distress, as measured with the short version of the Tinnitus Questionnaire (mini-TQ).

 

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).

 

 

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.

 

 

• Brain and Neuroscience Advances
• Cortex
• F1000Research
• In&Vertebrates
• NeuroImage: Reports
• Peer Community Journal
• PeerJ
• Psychology of Consciousness: Theory, Research and Practice
• Royal Society Open Science

 

 

Reisinger, L., Demarchi, G., Rösch, , S., Trinka, E., Obleser, L., & Weisz, N.  (2023). Registered Report: Are anticipatory predictions enhanced in tinnitus and independent of hearing loss? In principle acceptance of Version 4 by Peer Community in Registered Reports. https://osf.io/6gvpy

 

Sedley, W., Friston, K. J., Gander, P. E., Kumar, S., & Griffiths, T. D. (2016). An integrative tinnitus model based on sensory precision. Trends in Neurosciences, 39, 799-812. https://doi.org/10.1016/j.tins.2016.10.004

Bug detection is central to software engineering, but what motivates programmers to perform as optimally as possible? Despite a long history of economic experiments on incentivisation, there is surprisingly little research on how different incentives shape software engineering performance. In the current study, Krüger et al. (2022) propose an experiment to evaluate how the pay-off functions associated with different financial incentives influence the performance of participants in identifying bugs during code review. The authors hypothesise that performance-based incentivisation will result in higher average performance, as defined using the F1-score, and that different incentivisation schemes may also differ in their effectiveness. As well as testing confirmatory predictions, the authors will explore a range of ancillary strands, including how the different incentivisation conditions influence search and evaluation behaviour (using eye-tracking), and the extent to which any effects are moderated by demographic factors.

 

The Stage 1 manuscript was evaluated over one round of in-depth review. Based on detailed responses to the recommender and 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/s36c2

 

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:

 

 

 

1. Krüger, J., Çalıklı, G., Bershadskyy, D., Heyer, R., Zabel, S. & Siegmar, O. (2022). Registered Report: A Laboratory Experiment on Using Different Financial-Incentivization Schemes in Software-Engineering Experimentation, in principle acceptance of Version 3 by Peer Community in Registered Reports. https://osf.io/s36c2