Effects of proactive interference and rehearsal on the primary and secondary components of short-term retention

Under the conditions of the distractor paradigm, short-term retention declines to a minimum in a very brief period. The rapid forgetting can be said to reflect the declining contribution of the short-term store or primary memory and the asymptote can be taken as a measure of the contribution of the long-term store or secondary memory. It was shown that manipulating proactive effects by varying the recency of prior material affected only the primary memory component of the short-term retention function. On the other hand manipulating the difficulty of the subsidiary task performed during the retention period with proactive effects held constant affected both the primary and the secondary components. The results were discussed with respect to the relation between the two memory components and the idea that proactive effects are limited to long-term store.     

Monocular and binocular vision in the control of goal-directed movement

In the present research the authors examined the time course of binocular integration in goal-directed aiming and grasping. With liquid-crystal goggles, the authors manipulated vision independently to the right and left eyes of 10 students during movement preparation and movement execution. Contrary to earlier findings reported in catching experiments (I. Olivier, D. J. Weeks, K. L. Ricker, J. Lyons, & D. Elliott, 1998), neither a temporal nor a spatial binocular advantage was obtained in 1 grasping and 2 aiming studies. That result suggests that, at least in some circumstances, monocular vision is sufficient for the precise control of limb movements. In a final aiming experiment involving 3-dimensional spatial variability and no trial-to-trial visual feedback about performance, binocular vision was associated with greater spatial accuracy. Binocular superiority appeared to be most pronounced when participants were unable to adjust their limb control strategy or procedure on the basis of terminal feedback about performance.     

Profiles of Social Anxiety and Impulsivity Among College Students: A Close Examination of Profile Differences in Externalizing Behavior

Prior work indicates the presence of a subtype of Social Anxiety (SA) characterized by disinhibition or high externalizing behaviors such as substance use and Attention Deficit Hyperactivity Disorder (ADHD) symptoms. A sample of 375 undergraduates completed an online study including measures of SA, substance use, ADHD symptoms and impulsivity. Latent class analyses revealed three classes of individuals who evidenced: (a) low SA and low impulsivity, (b) high SA and low impulsivity, and (c) high SA and high impulsivity. Individuals high in both SA and impulsivity evidenced greater likelihoods of exhibiting externalizing behavior, relative to the two other classes. Post-hoc analyses revealed the largest and most significant differences between classes were seen with regard to ADHD. This finding extends previous work by replicating distinct profiles of SA and impulsivity, and highlighting that how these profiles relate to externalizing behaviors may depend on the externalizing domain.     

The nature of clinical depression: symptoms, syndromes, and behavior analysis

In this article we discuss the traditional behavioral models of depression and some of the challenges analyzing a phenomenon with such complex and varied features. We present the traditional model and suggest that it does not capture the complexity of the phenomenon, nor do syndromal models of depression that dominate the mainstream conceptualization of depression. Instead, we emphasize ideographic analysis and present depression as a maladaptive dysregulation of an ultimately adaptive elicited emotional response. We emphasize environmental factors, specifically aversive control and private verbal events, in terms of relational frame theory, that may transform an adaptive response into a maladaptive disorder. We consider the role of negative thought processes and rumination, common and debilitating aspects of depression that have traditionally been neglected by behavior analysts.     

Changing Drug Users’ Risk Environments: Peer Health Advocates as Multi-level Community Change Agents

Peer delivered, social oriented HIV prevention intervention designs are increasingly popular for addressing broader contexts of health risk beyond a focus on individual factors. Such interventions have the potential to affect multiple social levels of risk and change, including at the individual, network, and community levels, and reflect social ecological principles of interaction across social levels over time. The iterative and feedback dynamic generated by this multi-level effect increases the likelihood for sustained health improvement initiated by those trained to deliver the peer intervention. The Risk Avoidance Partnership (RAP), conducted with heroin and cocaine/crack users in Hartford, Connecticut, exemplified this intervention design and illustrated the multi-level effect on drug users’ risk and harm reduction at the individual level, the social network level, and the larger community level. Implications of the RAP program for designing effective prevention programs and for analyzing long-term change to reduce HIV transmission among high-risk groups are discussed from this ecological and multi-level intervention perspective.     

Within- and between-nervous-system inhibition of return: Observation is as good as performance

Inhibition of return (IOR) has been shown to occur when an individual returns to a target location (within-person IOR) and when an individual moves to a location just engaged by another individual (between-person IOR). Although within- and between-person IOR likely result from the same inhibitory mechanisms, different processes must activate these mechanisms following the performance and observation of action. Consistent with the suggestion that the mirror neuron system may be responsible for activating the inhibitory mechanisms behind IOR on observation trials, between-person IOR was only detected under restricted viewing conditions known to activate mirror neurons. These results indicate that mirror neuron system may be involved in both higher-order and automatic cognitive behavior.     

Buffered forgetting: When targets and distractors are both forgotten

In three experiments, we investigated prior findings that, following some memory tasks, essentially flat d' or forced-choice retention curves are produced. These curves have been interpreted as indicating that forgetting is not present over the intervals examined; however, we propose in this article that forgetting is actually present whenever hit rates and false alarm rates are both declining, despite the result being a flat retention curve. We demonstrate that such curves can be produced using a pair recognition procedure, a plurality discrimination task, and a verbal discrimination task. For all of these tasks, we provide either new evidence or refer to evidence already in the literature that tends to contradict alternative explanations. Then we show how the failure to consider both signal strength and noise has led to distortions in theoretical thinking about forgetting.     

Religious Attributions and Proximity of Influence: An Investigation of Direct Interventions and Distal Explanations

Investigations into religious attributions have focused on attributer's immediate, proximal causes of events, paying little attention to underlying, distal explanations. In an effort to explain the relatively low incidence of religious attributions and further a new model of proximal-distal attributions, we present two experiments investigating the proximal and distal use of religious and nonreligious supernatural attributions. Participants in both studies were presented a series of sixteen vignettes that varied on several attribution-relevant dimensions. After reading each vignette, subjects gave an initial explanation for the event, and were then probed for any underlying explanations. Experiment 1 used an interview format that allowed participants maximum latitude when explaining the event's outcome. Consistent with our predictions, participants perceived God as having a greater distal than proximal influence, though this difference was not evident for attributions to Satan or nonreligious supernatural agents. Experiment 2 was performed via a microcomputer, with a participant's initial attributional response branching to a set of appropriate distal explanations. Overall, the results suggest that attributer's perceive God working through indirect influences rather than direct intervention, with this effect being moderated by the attributer's level of religiosity. This pattern was evident in the use of God as a distal explanation as well as in the distal explanations to proximal attributions to God.