Oscillations in retention performance after passive avoidance training

The retention performance of independent groups of rats was examined at various intervals following one-trial passive avoidance training. Performance was good in the 30-sec, 15-min, 12-hr, 24-hr, and 36-hr group, while retention was significantly poorer between these peaks. Control experiments appear to rule out strictly performance factors related to footshock. These results suggest that some rhythmic internal (physiological) state of the organism may be a relevant condition for optimal retrieval—a state-dependent hypothesis.     

Person-environment congruence and employee job satisfaction: a test of Holland's theory

Person-environment congruence as assessed by Holland's model of vocational preference was tested in a sample of 362 employees from five environmental typologies (Realistic, Investigative, Social, Enterprising, and Conventional). Employees were classified as having congruent or incongruent person/environment pairings according to their occupation and their responses to Holland's Self-Directed Search. It was hypothesized that congruent employees would be significantly more satisfied with their jobs than incongruent employees. The results indicated that congruent employees were significantly more satisfied with the job facet satisfaction measures of work, pay, promotions, supervision, and coworkers as well as overall satisfaction compared to incongruent employees. In addition, the results revealed several Environment × Congruence interactions, indicating that the effects of person-environment congruence vary across different environmental typologies. The results are discussed in the context of establishing a fit between individual attributes and organizational environments.     

Social episodes and social structure in an academic setting: The social environment of an intact group

The social environment of an intact academic group, composed of faculty members, research students, and staff, was studied using a multidimensional scaling (MDS) procedure. The perceived group structure and the perception of social episodes were represented, and the relationship between these two aspects of the social environment was analyzed. Results indicated that (a) the perceived group structure could be adequately represented in three dimensions with group members differentiated along dimensions of sociability, creativity, and competence, (b) an individuals' perception of the group and his position within it were significantly related, (c) group members perceived the social episodes of the group in terms of attribute dimensions such as anxiety, involvement, evaluation, and socioemotional vs task orientation, and (d) an individual's formal status and perceived position within the group were significantly related to his perception of the group's episodes. The results are discussed in terms of the factors influencing episode perception, and the symbolic processes mediating between social position and perception. The utility of social episodes in describing a social environment is considered.     

Abortive responding during punishment of bar holding

A continuous chain of homogeneous responding was established in rats by training animals to hold a lever down for 10 sec or longer before releasing it for food reinforcement. When criterion releases were subsequently punished, completed holding chains were greatly suppressed, aborted chains increased markedly, while the rate of chain initiations remained unchanged.     

Acoustic cues for the perception of place of articulation in aphasia

Two experiments assessed the abilities of aphasic patients and nonaphasic controls to perceive place of articulation in stop consonants. Experiment I explored labeling and discrimination of [ba, da, ga] continua varying in formant transitions with or without an appropriate burst onset appended to the transitions. Results showed general difficulty in perceiving place of articulation for the aphasic patients. Regardless of diagnostic category or auditory language comprehension score, discrimination ability was independent of labeling ability, and discrimination functions were similar to normals even in the context of failure to reliably label the stimuli. Further there was less variability in performance for stimuli with bursts than without bursts. Experiment II measured the effects of lengthening the formant transitions on perception of place of articulation in stop consonants and on the perception of auditory analogs to the speech stimuli. Lengthening the transitions failed to improve performance for either the speech or nonspeech stimuli, and in some cases, reduced performance level. No correlation was observed between the patient's ability to perceive the speech and nonspeech stimuli.     

Parent's report of stress and articulation oscillation as factors in a preschooler's dysfluencies

Recently, one focus of research on dysfluency and stuttering seems to be on the preschooler. One goal of such research should be to determine what factors in the child's language system and what factors in the social environment may put the child at risk for developing dysfluencies and stuttering. The following is a parent's account of the occurrence of dysfluencies in a preschooler. Emphasis is on a language phenomenon that might be labeled “articulation oscillation” and on apparent social environmental stress.     

Is it just reading?: Comments on the papers by Mann,Morrison, and Wolford and Fowler

Comments on the stimulating papers by V. A. Mann (Reading skill and language skill. Developmental Review, 1984, 4, 1–15), F. Morrison (Reading disability: A problem in rule learning and word decoding. Developmental Review, 1984, 4, 36–47), and G. Wolford and C. A. Fowler (Differential use of partial information by good and poor readers. Developmental Review, 1984, 4, 16–35) come under four headings. First, their differences with respect to the organizing themes are identified. Second, the central difficulty, for theories of reading disability, posed by the high correlation between reading and IQ, and ways of dealing with this difficulty, are discussed. In the third and fourth sections, comments on the individual papers and a summary of the main lessons to be learned from this collection are presented.     

Response probability and similarity of retrieved response tendencies as determinants of response suppression difficulty

The primary objective of this study was to test the validity of the here labelled ‘suppression-time’ assumption which contends that the more difficult the response suppression operation, the longer the time required for its successful implementation. A secondary interest addressed the possibility that output suppression difficulty would be influenced by the level of response-response (R-R) compatibility existing between retrieved response tendencies. Two basic requirements confronted subjects within an experimental session: (a) dual-initiation (Dual-I) of paired arm movements, (b) initiation/suppression (I/S) of retrieved outputs, the irrelevant response being suppressed, the relevant output initiated. RT(I/S) magnitude and failure-to-inhibit error frequency increased as response probability increased, thereby providing support for the ‘suppression-time’ assumption. But R-R compatibility degree variations, when realized, did not consistently affect response suppression difficulty.