Foveal diplopia thresholds and fixation disparities

Comparison of the magnitude and intrinsic spread of foveal diplopia thresholds with the accuracy of ocular alignment as determined with a subjective alignment method shows that: the accuracy of alignment in the vertical direction (within 1–2 min) is remarkably good and much better than in the horizontal direction; the largest disparities occurring due to restricted alignment accuracy are usually substantially smaller than the foveal diplopia thresholds; interindividual variability in the magnitude of foveal diplopia thresholds is not due only to interindividual variability in the alignment accuracy; and the spread of foveal diplopia thresholds exceeds the spread of ocular alignment, which implies that the noise in the foveal disparity domain is not only due to the restricted alignment accuracy but also to sensory processes. Finally, the data confirm that, unlike the case with diplopia thresholds, the spread of stereoscopic thresholds is not affected by the restricted alignment accuracy.     

Integrality over different paradigms: Card sorting and two-stimulus matching

Orthogonal interference—indicating the cohesiveness between geometrical dimensions—was examined using two separate tasks: (1) card sorting and (2) two-stimulus matching requiring same/different responses. The card-sorting results of the present experiment were contrasted with the results of our previous research (1977, 1979) which used the two-stimulus matching task. Results were generally similar in that the orthogonal interference and, consequently, the degree of integrality/separability were the same for both tasks. Evidence was found for the emergence of a new nominal dimension. This and other results are only compatible with a weaker form of the global-to-local hypothesis of perceptual processing.     

Analysis of variances and covariances is misleading as a guide to a common factor model

The “factor” analyses published by Schultz, Kaye, and Hoyer (1980) confused component and factor analysis and led in this case as in many others to unwarranted conclusions. They used component analysis to develop factor models that were subjected to restricted (confirmatory) maximum likelihood analysis, but the final models for which good fits with the observed correlations were obtained were not common factor models. They were, however, discussed as such and conclusions drawn accordingly. When their correlation matrices are analyzed by the principal factors method, two factors are sufficient to account for the intercorrelations. These two factors generally support the a priori expectation of a difference between intelligence tasks and spontaneous flexibility tasks. They are also quite similar in younger and older subjects, when similarity is judged in terms of factor pattern. Factor loadings for the younger subjects, however, are much smaller than expectations based on the respective ranges of talent in the two groups of subjects or on past experience with similar tests in undergraduate student populations.     

Cognitive self-instruction for the control of impulsive classroom behavior: Ensuring the treatment package

The practical utility of cognitive self-instruction training in facilitating the work habits and academic performance of impulsive first-graders was assessed in the context of the regular classroom. The training paradigm was modified and environmental conditions were arranged to facilitate the transfer of the cognitive self-instruction strategy to the classroom. Following training, there were no significant increases in on-task behavior or in academic performance within the context of a group design. On the basis of this and other studies, a drastic revision of the cognitive self-instruction paradigm seems indicated. Not only must training become broader based, but models must be developed that take into account the requisite cognitive processes for task completion as well as the cognitive abilities of the youngsters to whom training is addressed. In general, the incorporation of information from the developmental and cognitive process literature would appear to facilitate the development of more effective training models.     

Selective involvement of the auditory-verbal modality in an acquired communication disorder: Benefit from sign language therapy

A 39-year-old female suffered bitemporal infarctions and exhibited an unusual behavioral syndrome of muteness and impaired auditory comprehension, with milder aphasic deficits in reading and writing. The anatomic basis of this modality-selective communication disorder appeared to involve both peripheral perceptual and motor as well as “central” language mechanisms. The patient's ability to communicate was greatly aided by instruction in Amerind and Ameslan Sign Language, in which she learned more than 100 signs. Patients whose acquired language deficits spare modalities of input or output may be ideal candidates for sign language therapy.     

Personality and mood: State-trait relationships

The scores of 33 subjects of the neuroticism scale of the Eysenck Personality Questionnaire correlated more highly with mood levels averaged over the 12 occasions studied than, on average, with mood scores on single occasions, and more highly with mood described in global terms than with scores on each of the original 18 mood scales. Subjects with high neuroticism scores had poorer mood on average and showed greater variation in mood pattern from one occasion to another than did more stable subjects. It is suggested that forms of relatively poor mood may be more varied than forms of good mood, and that, although neuroticism makes a poor mood more likely, the precise composition of this mood on any occasion may be determined by the combination of situation characteristics and person variables. Psychoticism scores correlated significantly, though weakly, with the average scores for some mood scales independently of neuroticism.     

Reasoning in the personal and moral domains: Adolescent and young adult women's decision-making regarding abortion

The present investigation of adolescent and young adult women's reasoning, and decision-making about abortion was conducted to determine whether reasoning about abortion could be described by moral, social-conventional, and personal concepts and to examine relationships between domain of reasoning and action choices. Seventy single women, ranging in age from 13 to 31 and divided between 25 women having abortions, 23 women continuing their pregnancies, and 22 never-pregnant women, were administered a semi-structured clinical interview about abortion and two hypothetical moral judgement dilemmas. A classification task was developed to provide an additional measure of reasoning in different domains. Another 29 single, first-pregnant women provided a comparison of the effects of these procedures on decision-making. Content analysis of the protocols revealed that responses to the abortion interview could be reliably distinguished between concepts of morality and personal issues and their coordination or lack of coordination. Subjects treating abortion as a moral issue were more likely to continue their pregnancies while subjects treating abortion as a personal issue were more likely to obtain an abortion. Differences in reasoning between pregnant and nonpregnant subjects were not observed. Moral responses to the abortion interview were found to be highly related to hypothetical moral judgments.     

Letter familiarity does not aid feature extraction

Summary Familiarity effects in visual letter processing were examined by means of a mutilation detection task. The uppercase E was used as the non-mutilated letter. One or two horizontal bars of the E were delected, to produce an upright or inverted F or L. These four mutilations of the E were assigned to the same response. In Experiment 1, brief exposure of the stimuli was followed by a backward mask. Experiment 2 was identical to Experiment 1, except that the display duration of the stimulus was increased and the backward mask was omitted. In Experiment 3, the overall luminance of the stimuli (luminance per point times length of the constituent line segments) was held constant. In Experiment 4, the upright and inverted non-E letter occurred in different blocks to encourage a normal (upright) letter processing strategy in the upright letter blocks. Accuracy (Experiment 1) and mean correct response times (all experiments) were not different for the upright and inverted F or for the upright and inverted L. These findings and converging results from other studies indicate that the higher familiarity of the upright letters did not aid feature extraction.