Monitoring running-wheel movement using a serial mouse and an IBM-compatible system

A running-wheel-movement-detection system is described for use with an IBM-compatible system and a serial mouse. It is an adaptation of a system developed for use on a Commodore 64. The IBM-compatible system provides obvious advantages in speed, memory, data storage, and programming ease over the earlier Commodore 64 system.     

A Pilot Study of Culturally Adapted Cognitive Behavior Therapy for Hispanics with Major Depression

The purpose of this study was to evaluate a culturally adapted cognitive-behavioral treatment (CBT) for major depression among Hispanics in primary care. Cultural adaptations were applied based on a range of cultural considerations described in the literature. Fifteen Hispanic primary care patients with major depression were enrolled. All participants received the 12-session intervention and completed baseline, posttreatment, and 6-month follow-up assessments. Four participants (27%) dropped out of the treatment. Analyses focused on changes from baseline functioning using a Wilcoxon Signed Rank Test. Results showed significant reductions in depressive, anxious, and somatic symptoms at posttreatment and 6-month follow-up. Mean reduction of depressive symptoms at posttreatment was 57%. Findings of acceptable treatment retention rates and clinically meaningful reductions in depressive symptoms showed promise for this intervention to treat Hispanics with major depression. Future studies should conduct a more rigorously controlled evaluation of this intervention.     

The duty to believe according to the evidence

‘Evidentialism’ is the conventional name (given mainly by its opponents) for the view that there is a moral duty to proportion one’s beliefs to evidence, proof or other epistemic justifications for belief. This essay defends evidentialism against objections based on the alleged involuntariness of belief, on the claim that evidentialism assumes a doubtful epistemology, that epistemically unsupported beliefs can be beneficial, that there are significant classes of exceptions to the evidentialist principle, and other shabby evasions and alibis (as I take them to be) for disregarding the duty to believe according to the evidence. Evidentialism is also supported by arguments based on both self-regarding and other-regarding considerations.     

The developmental course of lexical tone perception in the first year of life

Perceptual reorganisation of infants' speech perception has been found from 6 months for consonants and earlier for vowels. Recently, similar reorganisation has been found for lexical tone between 6 and 9 months of age. Given that there is a close relationship between vowels and tones, this study investigates whether the perceptual reorganisation for tone begins earlier than 6 months. Non-tone language English and French infants were tested with the Thai low vs. rising lexical tone contrast, using the stimulus alternating preference procedure. Four- and 6-month-old infants discriminated the lexical tones, and there was no decline in discrimination performance across these ages. However, 9-month-olds failed to discriminate the lexical tones. This particular pattern of decline in nonnative tone discrimination over age indicates that perceptual reorganisation for tone does not parallel the developmentally prior decline observed in vowel perception. The findings converge with previous developmental cross-language findings on tone perception in English-language infants [Mattock, K., & Burnham, D. (2006). Chinese and English infants' tone perception: Evidence for perceptual reorganization. Infancy, 10(3)], and extend them by showing similar perceptual reorganisation for non-tone language infants learning rhythmically different non-tone languages (English and French).     

Meaning matters in children's plural productions

The English plural is about the number of individuals in a set of like kinds. Two-year-old children use the plural but do not do so in all obligatory contexts. The present report asks whether the limitations on their production of the plural are related to aspects of meaning. In two Experiments plural productions were elicited from 2-year-old children for sets of size two and four and for instances of basic-level categories that were either similar or identical. Children were much more likely to produce the plural of these well-known nouns when there were four rather than two and when the instances were identical rather than merely similar. The results provide new evidence on children's acquisition of the English plural, showing that children's early productions are not just limited by knowledge of the noun and its plural form but also is limited by properties of the labeled sets in ways that are relevant to the underlying meaning of the plural.     

Gender differences in empathy: the role of the right hemisphere

The relationship between activation of the right cerebral hemisphere (RH) and empathy was investigated. Twenty-two men and 73 women participated by completing a chimeric face task and empathy questionnaire. For the face task, participants were asked to pick which of the two chimeric faces looked happier. Both men and women were significantly more likely to say the chimera with the smile to their left was happier, suggesting activation of the RH. As expected, men scored significantly lower than women on the empathy questionnaire, p = .003. A correlation was found between RH activation on the face task and empathy for women only, p = .037, suggesting a possible neural basis for gender differences in empathy.     

Goals and responses to failure: Knowing when to hold them and when to fold them

The ability to disengage from hopeless situations is critical to goal attainment and effective self-regulation. Two experiments investigated the effects of striving to attain success (approach goals) versus striving to avoid failure (avoidance goals) on persistence. Participants completed anagrams designed so that less persistence during an initial set of unsolvable anagrams was beneficial. In Study 1, participants reported how motivated they were by approach and avoidance goals. In Study 2, participants were primed to set approach or avoidance goals. Participants with avoidance goals persisted longer during failure, with more intense and enduring emotional distress, than those with approach goals. Greater anger predicted spending more time on subsequent unsolvable anagrams and accounted for differences in persistence. The results suggest that people with approach goals are better able to identify when they should disengage during failure, and disengage more completely, than people with avoidance goals. An earlier version of this article was presented at the Society for Personality and Social Psychology conference, Palm Springs, CA, January, 2006.