Health Beliefs and Intentions: Predictors of Return Compliance in a Tuberculosis Detection Drive1

A prospective design was employed to study the ability of various factors to predict return compliance in a tuberculosis detection drive. Five hundred fiftythree participants in the drive were asked to complete a questionnaire tapping their views of TB (based on the Health Belief Model) and their intentions to return for the recommended skin test reading. Behavioral intention was found to be an important predictor of return rates, and the inclusion of the HBM variables aided in the classification noncompliers. Practical and theoretical implications of these findings are discussed.     

Conditioned suppression of an avoidance response

A signal followed by shock was presented at irregular intervals during a free-operant avoidance schedule. The effects of this procedure were studied in terms of the rate of unavoided shock in the presence and absence of the signal and the rate of response before and during the signal. Three shock intensities were employed. Response enhancement as well as response suppression were observed; irrespective of changes in responding, shock rates substantially increased during signalled periods compared to non-signalled periods. Shock rates in non-signalled periods were generally higher than during training.     

Causal chunking: memory and inference in ongoing interaction

We propose that people simplify their perceptions of their interactions by organizing them into discrete casual chunks. Once formed, these chunks presumably influence the extent to which people are aware of their influence on others, as well as their impressions of others. We anticipated that people would form self-causal chunks (e.g., my action causes my partner's action) when they possessed an offensive set and other-causal chunks when they possessed a defensive set. We also expected that a self-causal chunking strategy would make salient people's influence on their partners and thereby discourage them from concluding that their partner's behaviors reflected underlying dispositions. In contrast, we anticipated that an other-causal chunking strategy would obscure people's influence on their partners, thereby encouraging them to infer that their partners' behaviors reflected underlying dispositions. We tested these hypotheses by inducing participants to develop either a defensive or an offensive set prior to interacting with another person in a simulated arms race. After the interactions, we assessed the manner in which participants chunked their interactions, as well as their impressions of partners. The results supported our predictions. The implications of these findings for understanding conflict and misunderstanding in interpersonal relations are discussed.     

Praising child compliance: Reinforcement or ritual?

Praising child compliance is a common therapeutic recommendation to parents with noncompliant children. There are currently no studies documenting the independent contribution of the praise component to successful parent training programs. Three projects were designed to evaluate the hypotheses underlying the use of contingent praise routines. Namely, it has been suggested that conduct-disordered children are relatively unresponsive to adult approval at pretreatment, yet become responsive by posttreatment. In contrast to the hypotheses, data indicated that child compliance levels were not associated with child responsivity to maternal social reinforces; noncompliant children were responsive to maternal praise both before and after treatment; child responsivity to maternal praise did not covary with successful treatment; previously noncompliant but successfully treated children continued to comply to maternal instructions after contingent praise was withdrawn; a nonclinic child demonstrated extensive compliance persistence in the absence of contingent praise. Praising child compliance appeared to be more of a polite ritual than an active therapeutic component for altering noncompliance.The author is grateful to the many students who have participated in these projects. Special thanks go to Lynn McIsaac, Lisa Grange, and Dan Anderson for their assistance with Project 3.     

Comparison of timing and classical conditioning

Four experiments with rats investigated if the timing of a stimulus (sound) correlated with the strength of a conditioned response (CR) to the stimulus. The timing (effective duration) of the stimulus was measured using the peak procedure, similar to a discrete-trials fixed-interval procedure. The rats were trained so that their response rate reached a maximum about 40 s or 60 s after the onset of a light; the time of the maximum measured from the start of the light (peak time) was the measure of timing. On some trials, the light was preceded by a short (5 s) or long (20 s or 30 s) interval of sound. We assumed that the difference in peak time after long and short sounds reflected the timing of the sound--if the sound was timed, the longer sound would produce a lower peak time; if the sound was not timed, the two durations of sound would produce the same peak time. The CR was lever-pressing during the sound. The sound was treated in various ways: presented alone (Experiments 1, 3, and 4), followed by food (Experiments 1, 3, and 4), preceded by food (Experiment 3), and followed by food after 20 s (Experiment 4). Treatments that produced no timing of sound produced no CR, and treatments that increased (or diseased) timing also increased (or decreased) the CR. The results suggest that there is overlap between the mechanisms that produce time discrimination and the mechanisms that produce classical conditioning.     

The effects of feedback with chronically institutionalized mental patients

The ability of two female and one male chronically institutionalized adult mental patients to comprehend and retain feedback on individualized problem behaviors and the effect of that feedback on changes in the occurrences of those behaviors were examined. Feedback on five problem behaviors was provided to each subject within a small therapy group setting employing a multiple baseline across subjects experimental design. Comprehension and retention tests occurred two, five, and seven days following the feedback in the small groups, while the rates of the occurrences of the problem behaviors were time-sampled throughout the subjects' waking day via use of the Time-Sample Behavioral Checklist (Paul, 1987). Results indicated that, although there were no changes in the rates of occurrence, these subjects were able to retain and understand the feedback on their problem behaviors. Implications for further investigations and for the utility of feedback with chronically institutionalized adults are discussed.