The actual and retrospective-occupational self-concept dimensions of retired educators

A 20-item adjective checklist was used by 118 retired educators to describe their actual and retrospective-occupational self-concepts. The men made their retrospective ratings for middle-aged and preretired occupational roles. The intercorrelations among the self-concept ratings were multiple-set factor analyzed, and seven common dimensions were identified: (1) stability, (2) conventionality, (3) independence, (4) practicality, (5) status, (6) confidence, and (7) cleverness. The results suggested that the retired educators had used the same dimensions in describing their actual and retrospective-occupational self-concepts. The percentages of variance contributed by the dimensions within the self-concept structures were also reported and discussed within the framework of career development.     

The role of inference in children's comprehension and memory for sentences

In a series of studies, young children often failed to construct and remember inferred relationships which they were capable of understanding. A cued recall procedure was employed to assess the relative effectiveness of implicit and explicit word prompts for sentence memory. The implicit cues were much less effective than the explicit cues for 6–7 yr old children while the cue types did not differ for 11–12 yr olds. Instructions to imitate the actions described by the sentences eliminated the memory difference for the young children. Developmental improvement in spontaneous inferential operations and intentional plans to remember are mechanisms which appear to yield an elaborated memory representation and greater access routes through indirect and implied relationships.     

The Premack principle in human experimental and applied settings

Studies claiming support for the Premack Principle in human experimental and applied settings are reviewed in terms of the standard test conditions associated with the Principle and in terms of the Principle's conceptual constrains. Little definitive evidence was found to support the claim that a high probability response will reinforce a lower probability response, nor was the converse contention supported, that a low probability response will act as a punisher for a high probability response. More importantly, among the reports reviewed there was no evidence for the reversibility of the reinforcement relationship.     

Stigma,staring, and discomfort: A novel-stimulus hypothesis

Three experiments were conducted in order to assess the validity of the novel-stimulus hypothesis as an explanation for why people who are physically different (i.e., novel) are avoided. The hypothesis states that avoidance is mediated by conflict over a desire to stare at novel stimuli and a desire to adhere to a norm against staring when the novel stimulus is another person. In the first two field experiments, subjects viewed photographs of novel (handicapped or pregnant) and familiar (physically normal) people under conditions where staring was sanctioned or not. It was found that staring increased with novelty when staring was unobserved (sanctioned); however, the reverse obtained when an observer was present. In the third experiment, subjects interacted with a crippled, pregnant, or physically normal partner. Half of the subjects were first given the opportunity to observe their partner through a one-way mirror. The reduction in stimulus novelty for this group resulted in reduced avoidance. The question of whether such avoidance of the disabled results from feelings of dislike or disgust as previously suggested, or from discomfort created by novelty, is discussed.     

Attraction and altruism: With a little help from my friends

The present experiment was designed to determine whether the reinforcement value of an altruistic response is a function of attraction toward the victim and/or the affective state of the subject. Subjects (N = 95) received positive or negative evaluations from a victim or from a bystander and subsequently performed an altruistic response which terminated shock delivery to a victim on a series of 14 trials. Analyses of variance indicated that the acquisition of an altruistic response was greatest when attraction toward the victim was most positive (p < .0001) and nonexistent when attraction toward the victim was least positive. The results were consistent with the proposition that attraction rather than affect mediates altruistic reinforcement. Those subjects receiving negative evaluations from the victim failed to acquire the altruistic response, suggesting that failure to help may function as a form of passive aggression.     

Cheating,intention, and punishment from an equity theory perspective

Male college students were given the opportunity to deliver aversive noise to a partner (confederate) contingent on the partner's “mistakes” in a learning task. Subjects were either not informed about a reward or told that they, their partner, or a charity would receive a monetary reward for speedy learning. Half of the subjects observed the confederate cheat, while half did not observe any deceptive behavior. The intensity of punitive behavior seemed to vary in accordance with predictions derived from equity theory. That is, cheating for a charity, a “good cause” resulted in less intense punishment than did cheating for selfish gain. On the other hand, mistakes, uncomplicated by cheating, which deprived a charity were punished more intensely than were mistakes whose only result accrued to the confederate himself.     

An experimental and theoretical investigation of the constant-ratio rule and other models of visual letter confusion

The constant-ratio rule (CRR) and four interpretations of R. D. Luce's (In R. D. Luce, R. R. Bush, & E. Galanter (Eds.), Handbook of mathematical psychology (Vol. 1). New York: Wiley, 1963) similarity choice model (SCM) were tested using an alphabetic confusion paradigm. Four stimulus conditions were employed that varied in set size (three, four or five stimulus elements) and set constituency (block letters: A, E, X; F, H, X; A, E, F, H; A, E, F, H, X), and were presented to each subject in independent blocks. The four interpretations of the SCM were generated by constraining one, both, or neither of its similarity and bias parameter sets to be invariant in across-stimulus set model predictions. The strictest interpretation of the SCM (both the similarity and bias parameters constrained), shown to be a special case of the CRR, and the CRR produced nearly equivalent across-set predictions that provided a reasonable first approximation to the data. However, they proved inferior to the least strict SCM (neither the similarity nor bias parameters were constrained; the common interpretation of the SCM in visual confusion). Additionally, the least strict SCM was compared to J. T. Townsend's (Perception and Psychophysics, 1971, 9, 40–50, 449–454) overlap model, the all-or-none model (J. T. Townsend, Journal of Mathematical Psychology, 1978, 18, 25–38), and a modified version of L. H. Nakatani's (Journal of Mathematical Psychology, 1972, 9, 104–127) confusion-choice model. Both the least strict SCM and confusion-choice models produced nearly equivalent within stimulus set predictions that were superior to the overlap and all-or-none within-set predictions. Measurement conditions related to model structure and equivalence relations among the models, many of them new, were examined and compared with the statistical fit results of the investigation.     

The bias of an estimate of coupled slack in stochastic PERT networks

An earlier paper presented a method for using response times to construct a PERT network representing the mental activities in a task. A key role in this method is played by parameters called coupled slacks. The magnitudes of the coupled slacks are used to test the validity of a PERT model and to deduce aspects of the structure of the network. In a stochastic PERT network, the usual estimate of coupled slack based on the mean completion times can be biased. Distribution-free upper and lower bounds are derived for the bias, and it is shown that the bias approaches zero as the probability of relatively long prolongations increases. It is also shown that the expected value of the estimate of coupled slack between two activities is negative only if the two activities are in a Wheatstone bridge. Finally, an estimate of the increase in completion time due to prolonging an activity, given that the prolongation did in fact increase the completion time, is derived.