The effects of rate of conditioned reinforcement on the resistance to change of operant behavior have not been examined. In addition, the effects of rate of conditioned reinforcement on the rate of observing have not been adequately examined. In two experiments, a multiple schedule of observing-response procedures was used to examine the effects…

Two experiments examined whether postsample signals of reinforcer probability or magnitude affected the accuracy of delayed matching to sample in pigeons. On each trial, red or green choice responses that matched red or green stimuli seen shortly before a variable retention interval were reinforced with wheat access. In Experiment 1, the…

Two experiments with pigeons examined the effects of unsignaled, nonresetting delays of reinforcement on responding maintained by different reinforcement rates. In Experiment 1, 3-s unsignaled delays were introduced into each component of a multiple variable-interval (VI) 15-s VI 90-s VI 540-s schedule. When considered as a proportion of the…

Research shows that most children and adolescents do not get enough high-quality sleep, and that their sleep times appear to have declined over the last two decades. Coinciding with this trend has been the rise in popularity of new media forms including the Internet, video games, cell phones and DVDs. Because of the immediacy and interactivity of…

This paper examines the possibility that citizens' mediated and sporadic exposure to education research influences their policy attitudes. It reflects upon how citizens--who are not direct consumers of education research and who lack basic training in the modes of social scientific inquiry--use the paucity of information made available to them in…

This article presents a marital horizon theory of emerging adulthood that posits that young people's perceptions of marriage are central factors in determining subgroup differences in the length of emerging adulthood as well as the specific behaviors that occur during this period in the family life cycle. The model was tested with a sample of 813…

The purpose of this study was to examine the prevalence of behavioral risk and protective factors among at-risk preschoolers. Parent-reported data ( N = 2,550) from the Devereux Early Childhood Assessment (DECA) indicated that Head Start preschoolers had significantly more behavior concerns and fewer protective factors than would be expected based…

This study investigated the efficacy of a reflective process designed to enhance novice professionals' capacity to critically reflect on their practice. One hundred and eighteen (118) final-year behavioural science students participated in an action learning based subject that simulated the roles (e.g. client-consultant) and demands of…

The present study evaluated the effects of both a traditional lecture and the conservative dual-criterion (CDC) judgment aid on the ability of 6 university students to visually inspect AB-design line graphs. The traditional lecture reliably failed to improve visual inspection accuracy, whereas the CDC method substantially improved the performance…

Task analyses have traditionally been framed in terms of overt behaviors performed in accomplishing tasks and goals. Pioneering work at the Learning Research and Development Center looked at what contribution a cognitive analysis might make to current task analysis procedures, since traditional task analysis methods neither elicit nor capture…

Goals and challenges pertaining to infant sensory and perceptual development are discussed. It is suggested that the inability of researchers to think and talk wisely about "partial accomplishments" in development creates a barrier in developmental research. Conceptual schemes are needed to accommodate these partial accomplishments. Three major…

Examines the relationships between vocal activity and three other variables: attribution of quality contributions; perceived listening, and perceived understanding. Concludes that frequency and duration of speech serve as a major mediating variable in communicative relationships. (MH)

One snake-phobic woman and one spider-phobic woman, after having received systematic desensitization, were exposed to a live snake or spider in a caged or an uncaged condition. The implications of these findings for the external validity of the behavioral approach test are discussed. (EJT)

Develops a method for predicting leadership behavior in small groups by integrating leadership theory and source valence concepts. (MH)

Covers an experimental study designed to test the prevalence of specific judgemental rules in human information processing. See CS 703 555 for availability. (MH)