Reaction times (RTs) slow and become more variable with age. Research samples are typically small, biased, and of restricted age range. Consequently, little is known about the precise pattern of change, whereas evidence for sex differences is equivocal. The authors reanalyzed data for 7,130 adult participants in the United Kingdom Health and Lifestyle Survey, originally reported by F. A. Hupper...

Existing theories on life span changes in confidence or motivation suggest that individuals' preferences to enter competitive situations should gradually decline with age. We examined competitive preferences in a field experiment using real financial stakes in 25- to 75-year-olds (N = 543). The critical dependent variable was whether participants chose to perform a simple mental arithmetic task...

Can young children report coherently on their emotions, and how do their reports contribute to our understanding of emotional development? Two-hundred six children ages 3 to 6 years participated in structured laboratory tasks designed to elicit a range of positive and negative emotions and indicated their emotional state following each task. Children's reports of their emotions meaningfully var...

AIM This study aimed to examine sex and age differences of various stepping movements in the elderly and to clarify useful stepping movements for evaluation of their dynamic balance. METHODS Two hundred and eighty-six healthy elderly subjects who could walk independently (male mean age = 71.2 +/- 7.1 years; female mean age = 71.5 +/- 6.0) performed the following stepping tests: back and forth...

mantoux test using 2 iu of tuberculin prepared in iran was performed on 6675 healthy persons randomly selected from an urban population (shiraz) of iran. in 3776 persons with no evidence of previous bcg vaccination the rate of positive reaction was less than 2% up to the age of 14, slightly more than 2% among those 15-19 years of age, but strikingly higher (45.5%) in older age groups (p<0.001)....

Safer sex is important and comprises of a series of five condom-related behaviours: accessing, carrying, negotiating, using and disposing. This study explored potential gender and age differences in these condom-related behaviours. Data suggests gender differences exist for accessing, carrying and disposing behaviours. An age difference was seen in accessing behaviour. Therefore future safer se...