Absolute pitch in infancy and adulthood: the role of tonal structure

Despite many similarities in infant and adult auditory processing, the literature suggests that two aspects of music perception, pitch processing and knowledge of tonal structure, change over development. The current experiments assess the use of absolute and relative pitch cues in a tone sequence statistical learning task containing tonal structure. The results suggest that infants preferentially process absolute pitch patterns in continuous tone sequences, supporting the hypothesis that absolute pitch is present in infancy, whereas adults tracked both absolute and relative pitch patterns. Infants and adults detected the tonal structure in the input, suggesting that humans are attuned to basic aspects of tonality early in life.     

Similarities and Differences Between African Americans’ and European Americans’ Attitudes,Knowledge, and Willingness to Communicate About Organ Donation1

While little is known about African Americans’ attitudes and knowledge about organ donation, even less is known about how African Americans’ attitudes, values, and beliefs affect their behavior and behavioral intentions regarding organ donation; or how African Americans’ views are similar to or different from those of European Americans. Adults working 2 sites of a national corporation were randomly selected to complete a survey about organ donation willingness, intention to sign an organ donor card, knowledge and attitudes toward organ donation, and level of altruism. Results indicate that African Americans differ significantly from Whites on several individual attitude and knowledge items. However, the basic relationship between knowledge, attitudes, values, and behaviors regarding organ donation between the 2 groups appears the same. Furthermore, these results indicate that future organ donation promotion campaigns must focus on increasing basic knowledge and countering myths about organ donation for both populations.     

Why Higher Working Memory Capacity May Help You Learn: Sampling,Search, and Degrees of Approximation

Algorithms for approximate Bayesian inference, such as those based on sampling (i.e., Monte Carlo methods), provide a natural source of models of how people may deal with uncertainty with limited cognitive resources. Here, we consider the idea that individual differences in working memory capacity (WMC) may be usefully modeled in terms of the number of samples, or “particles,” available to perform inference. To test this idea, we focus on two recent experiments that report positive associations between WMC and two distinct aspects of categorization performance: the ability to learn novel categories, and the ability to switch between different categorization strategies (“knowledge restructuring”). In favor of the idea of modeling WMC as a number of particles, we show that a single model can reproduce both experimental results by varying the number of particles—increasing the number of particles leads to both faster category learning and improved strategy‐switching. Furthermore, when we fit the model to individual participants, we found a positive association between WMC and best‐fit number of particles for strategy switching. However, no association between WMC and best‐fit number of particles was found for category learning. These results are discussed in the context of the general challenge of disentangling the contributions of different potential sources of behavioral variability.     

Simultaneous switching of auditory transients For two-channel presentation

A modification of the Grason-Stadler Series 829 D&E Electronic Switches that enables simultaneous cross-channel presentation of auditory signals at the two ears is described.     

Improvements to Suicide Prevention Training for Prison Staff in England and Wales

Suicide prevention training for the prison service in England and Wales has been criticized. STORM is a package emphasizing the practice and review of interactions with suicidal persons and was evaluated in a pilot study for use in prisons. Trainees completed questionnaires immediately before and after training and at 6 to 8 months follow‐up. Training significantly improved attitudes, knowledge, and confidence, and improvements were maintained at follow‐up. Satisfaction with training was very high. STORM was successfully adapted for prison settings, and showed good effects among staff trained. It should be provided to the wider prison estate, with regular refresher training.