Maintenance and transfer of self-reinforcement functions

In order to examine conditions maintaining self-reinforcement functions, pigeons were trained to reward their own performances and then tested for adherence to work requirements under decreasing likelihood of punishment for undeserved self-reward. Contingent self-reinforcement was stably maintained given moderate to high probability that unmerited self-reward would incur punishing consequences. In successive reversals of treatment and test conditions, the amount of behavior performed for each self-reward covaried with self-reinforcement rate. A further experiment demonstrated that self-reinforcing practices, involving both performance and consummatory contingencies, transfer to new activities for which the animal had never been trained to reward himself contingently. Adherence to performance requirements was more stringent, however, than to limitations on amount of rcinforcers consumed from freely available provisions.     

Factor specific differences in locus of control for emotionally disturbed and normal children.

The Nowicki-Strickland Locus of Control Scale for Children was given to 20 normal and 20 emotionally disturbed children to investigate the differences between the two groups on self-reported locus of control. The locus of control score and scores for each separate factor were calculated. Separate analyses of variance indicated that emotionally disturbed children did not differ from normals on overall locus of control nor on four of the five factors. However, one factor, Helplessness, differentiated the two groups with emotionally disturbed children endorsing more Helplessness items. The results are discussed in terms of factor specific methodology and in regards to the clinical relevance of Helplessness as a key factor.     

Perceptual reactance and melanic density.

Following assessment of eye color, a total of 108 college students (33 males and 75 females) estimated changes in sizes of standardized blocks while blindfolded. Subjects were classfied as perceptual augmenters, moderates or reducers as a function of their overestimation, accurate estimation, or underestimation, respectively, of the sizes of the blocks. A significant interaction of gender by perceptual reactance appeared, with augmenting males being rated the most dark-eyed and augmenting females being rated the most light-eyed. Interpretation of the findings was made in terms of attention to relevant cues.     

Backward conditioning as an extinction procedure

In two conditioned suppression experiments, rats received Pavlovian forward defense conditioning in which tonal conditioned stimuli (CSs) terminated with the onset of scrambled grid shock unconditioned stimuli (USs). After this experience, the rats then received a Pavlovian backward conditioning procedure in which the same USs now terminated with the onset of the same CSs. Although the two experiments differed greatly in terms of CS and US parameters, number of forward and backward pairings, and in terms of the general techniques used to establish and measure the Pavlovian conditioned response (CR), the results of both experiments agreed in showing that backward conditioning can indeed weaken a CR based on forward pairings. The results also show that, under some conditions, the backward procedure can be at least as effective in weakening an established CR as the traditional CS-alone extinction procedure; but, under other conditions, the backward procedure is less effective and leads to more spontaneous recovery than the CS-alone procedure.     

JOB-RELATEDNESS OF A POSTTRAINING JOB KNOWLEDGE CRITERION USE TO ASSESS VALIDITY AND TEST FAIRNESS

Significant job-relatedness was found for a posttraining job knowledge test criterion using an application of Lawshe's content validity method. The aide test was used as a criterion to assess the predictive validity of a vocabulary test and a civil service test with samples of black ( N = 43) and white ( N = 62) psychiatric aides. Significant validities were found on both tests, but a vocabulary test proved to be the better predictor of the criterion in both samples. The obtained validities were discussed in terms of differential validity, test fairness, and sample size. This study demonstrated that a content validity method could be applied to criteria as well as selection tests. It was concluded that content validity methods may be able to help solve the problem of criterion relevance in validation research by providing quantitative evidence of the job-relatedness of criteria.