General self-efficacy and control in relation to anxiety and cognitive performance

The present investigation employed a general measure of self-efficacy, a measure of perceived control, and items relating to expectation and evaluation (pre and post). The purpose was to determine whether general self-efficacy or perceived control best predicted the criterion variables of state anxiety and performance on a stressful cognitive task (solving anagrams) under conditions of high versus low control. These relationships were tested under the experimental conditions of high and low objective control (i.e., the actual control afforded by the situation). Results showed that general self-efficacy, relative to perceived control was a better predictor of state anxiety in the high and low control conditions but neither predicted actual performance. Participants’ expectations of task difficulty, their own performance, and their performance relative to the performance of others taken before the task were compared with their evaluations of difficulty and performance after completing the task. Participants indicated that the task was easier than anticipated, but rated their own performance more poorly after completion of the task. The study reported in this article was supported, in part, by Social Sciences and Humanities Research Council Grant No. 410-94-1473 to Norman S. Endler.     

Realization for Causal Nondeterministic Input-Output Systems

There are two well-developed formalizations of discrete time dynamic systems that evidently share many concerns but suffer from a lack of mutual awareness. One formalization is classical systems and automata theory. The other is the logic of actions in which the situation and event calculi are the strongest representatives. Researchers in artificial intelligence are likely to be familiar with the latter but not the former. This is unfortunate, for systems and automata theory have much to offer by way of insight into problems raised in the logics of action. This paper is an outline of how the input-output view of systems and its associated solution of state realization may be applied to the formalization of dynamics that uses a situation calculus approach. In particular, because the latter usually admits incompletely specified dynamics, which induces a non-deterministic input-output system behavior, we first show that classical state realization can still be achieved if the behavior is causal. This is a novel systems-theoretic result. Then we proceed to indicate how situation calculi dynamic specifications can be understood in systems-theoretic terms, and how automata can be viewed as models of such specifications. As techniques for reasoning about automata are abundant, this will provide yet more tools for reasoning about actions.     

Aging and visual 3-D shape recognition from motion

Two experiments were conducted to evaluate the ability of younger and older adults to recognize 3-D object shape from patterns of optical motion. In Experiment 1, participants were required to identify dotted surfaces that rotated in depth (i.e., surface structure portrayed using the kinetic depth effect). The task difficulty was manipulated by limiting the surface point lifetimes within the stimulus apparent motion sequences. In Experiment 2, the participants identified solid, naturally shaped objects (replicas of bell peppers, Capsicum annuum) that were defined by occlusion boundary contours, patterns of specular highlights, or combined optical patterns containing both boundary contours and specular highlights. Significant and adverse effects of increased age were found in both experiments. Despite the fact that previous research has found that increases in age do not reduce solid shape discrimination, our current results indicated that the same conclusion does not hold for shape identification. We demonstrated that aging results in a reduction in the ability to visually recognize 3-D shape independent of how the 3-D structure is defined (motions of isolated points, deformations of smooth optical fields containing specular highlights, etc.).     

The Differential Role of Anxiety Sensitivity and its Components in the Relation between Emotional Nonacceptance and Anxiety and Depressive Symptoms and Disorders among Latinos in Primary Care

The present investigation examined anxiety sensitivity (AS) in the relation between emotional nonacceptance (unwillingness to experience unwanted emotions) and mood and anxiety symptoms among Latinos seeking health services at a primary healthcare facility. Participants included 267 adult Latinos (85.4% female; Mage = 38.8 years, SD = 10.7, and 95.9% used Spanish as their first language). Results indicated that emotional nonacceptance was indirectly related to number of mood and anxiety disorders, anxious arousal, social anxiety, and depressive symptoms through AS. The observed effects were evident above and beyond the variance accounted for by gender, age, marital status, educational status, employment status, years living in the United States, and negative affectivity. Using a multiple mediation model revealed that the AS cognitive, physical, and social concerns demonstrated unique incremental explanatory effects (above and beyond the other two AS sub-scales) for depressive, anxious arousal, and social anxiety symptoms, respectively. Thus, specific sub-scales of AS were uniquely related with the expression of particular affective symptom domains. Overall, the present findings suggest that there is merit in focusing further scientific attention on the interplay between nonacceptance and AS in regard to better understanding and intervening to reduce anxiety/depressive vulnerability among Latinos in primary care.     

Efficacy of Parent-Child Interaction Therapy with Parents with Intellectual Disability

Parents with intellectual disability (ID) face many parenting challenges that may affect their ability to parent effectively, and such deficits are often associated with various poor child outcomes. Research findings are inconsistent for interventions targeting systematic skills for parents with ID. Parent-Child Interaction Therapy (PCIT) is an empirically supported treatment that incorporates performance-based training to enhance parenting ability. This study evaluated implementation of PCIT with parents with ID using a multiple baseline design across behaviors. Results suggest increases in positive parenting behaviors and consistent discipline. However, limitations related to poor maintenance and generalization warrant the need for future research.     

Precision of Curriculum-Based Measurement Reading Data: Considerations for Multiple-Baseline Designs

Single-case designs provide an established technology for evaluating the effects of academic interventions. Researchers interested in studying the long-term effects of reading interventions often use curriculum-based measures of reading (CBM-R) as they possess many of the desirable characteristics for use in a time-series design. The reliability of CBM-R scores is often supported by research from group designs, but making idiographic interpretations regarding the change in a student’s oral reading rate requires attention to the precision of static scores and growth estimates. The purpose of this paper is twofold. First, we discuss how recent empirical work on the technical adequacy of CBM-R scores has revealed multiple threats to the data-evaluation validity when CBM-R passages are used to measure oral reading rate. Second, we identify pertinent considerations for conducting a visual analysis of intervention effects based on CBM-R data. We conclude with a brief discussion of implications for researchers considering the use of CBM-R within multiple-baseline designs.     

The role of guessing and boundaries on date estimation biases

This study investigates the causes of event-dating biases. Two hundred participants provided knowledge ratings and date estimates for 64 news events. Four independent groups dated the same events under different boundary constraints. Analysis across all responses showed that forward telescoping decreased with boundary age, concurring with the boundary-effects model. With guesses removed from the data set, backward telescoping was greatly reduced, but forward telescoping was unaffected by boundaries. This dissociation indicates that multiple factors (e.g., guessing and reconstructive strategies) are responsible for different dating biases and argue against a boundary explanation of forward telescoping.     

The role of risk avoidance in anxiety

Various forms of disinhibitory psychopathology (e.g., substance use disorder) are characterized by a tendency to make overly risky decisions. The current paper reports on data suggesting that, in contrast, anxiety is associated with an exaggerated tendency to engage in risk-avoidant decision making. In a nonclinical sample of university students, trait anxiety was associated with relatively low willingness to take risks, across a range of behavioral contexts. Trait anxiety was also associated with pessimistic risk appraisals (e.g., heightened perceptions of the likelihood and severity of negative outcomes). Furthermore, these associations were apparent while controlling for depression. Additional findings suggest that heightened perceptions of the severity of negative outcomes might mediate the link between trait anxiety and risk avoidance. This research has implications for understanding the role basic risk decision-making processes may play in the nature and treatment of anxiety.