Moving from cognition to behavior: What the research says

In 1994, R. G. Lord and P. E. Levy proposed a variant of control theory that incorporated human information processing principles. The current article evaluates the empirical evidence for their propositions and updates the theory by considering contemporary research on information processing. Considerable support drawing from diverse literatures was found for propositions concerning the activation of goal-relevant information, the inhibition of goal-irrelevant information, and the consequences of goal completion. These effects were verified by meta-analytic analyses, which also supported the meaningfulness of such effects on the basis of their unstandardized magnitudes. The authors conclude by proposing new directions for this version of control theory by invoking recent theorizing on goal emergence and the importance of velocity and acceleration information for goal striving and by reviewing research in cognitive neuroscience.     

Survey return rates as a function of priority versus first-class mailing

Prior research indicates survey procedures that signal significance and individualized mailings have higher response rates. Thus, it was hypothesized that surveys delivered via Priority mail would result in higher return rates than surveys delivered via First-Class. 260 surveys were sent to individuals randomly selected from lists of licensed physical and behavioral healthcare providers in Alaska and New Mexico. Half of the selected individuals were assigned randomly to receive mailings using Priority mail, the other half received First-Class mailings. Return rate was 39% for First-Class and 35% for Priority. Z tests of proportion indicated no statistically significant differences between methods. Given increased costs with no resultant increase in response rate, sending surveys to potential participants via Priority mail does not appear warranted.     

The National Institutes of Health (NIH) State-Of-the-Science Conference on Preventing Violence and Related Health-Risking Social Behaviors in Adolescents — A Commentary

Although youth in the United States remain substantially more violent than adolescents and young adults in most industrial countries, the National Institutes of Health's (NIH) State-of-the-Science Conference on Preventing Violence and Related Health-Risking Social Behaviors in Adolescents identified many reasons for optimism about our capacity to develop effective prevention and intervention responses. The research is getting better and contrary to popular opinion we do know a lot about what does work. Future advances will depend upon our insistence on the use of effectiveness evidence and the development of a taxonomy which will facilitate cross disciplinary communication.     

Knowledge is not everything: analysis of children's performance on a haptic comparison task

The relative effects of developmental level and domain-specific knowledge on children's ability to identify and make similarity decisions about object concepts based only on haptic (touch) information were investigated. Children aged 4-9 years with varying levels of dinosaur knowledge completed a cross-comparison task in which they haptically explored pairs of familiar (dinosaur) and unfamiliar (sea creature) models that varied in terms of their degree of differentiability. Older children explored models more exhaustively, found more differentiating features and consequently made fewer errors than younger children did. High knowledge enabled children to identify models correctly, but was also associated with the use of a hypothesis testing strategy, which led children to make greater numbers of "miss" errors on the cross-comparison task. Performance in the control domain illustrated that the hypothesis testing strategy was specific to the high knowledge domain. Potential explanations for the role of knowledge and development in haptic exploration are considered.     

A brief delay decreases perceived similarity and improves discrimination

A same-different discrimination between the colors of 2 halves of a circle was poorer when the halves were viewed simultaneously than when the delay between viewing them was 33 ms. The simultaneous discrimination also produced a poor performance on different stimuli relative to same stimuli in comparison to the successive discrimination. Poor-on-different performance should indicate high perceived similarity. The simultaneous colors were also judged as more similar. The delay did not alter the physical similarity of the colors. Thus, the delay may have decreased assimilation (perceived similarity) and thereby improved discrimination, in support of the hypothesis that perceived similarity frequently affects discrimination.