Siblings of children with mental retardation: Family characteristics and adjustment

Siblings of children with mental retardation may be at greater risk for adjustment problems because of family stress related to the needs of the child with mental retardation. Family dimensions were investigated to determine their relationship to sibling adjustment. Adjustment of 12 siblings of children with mental retardation was examined in relationship to family dimensions. These relationships were compared to those for children from families without a disabled child. For both groups, self concept was positively associated with family cohesion, and social competence was positively associated with family promotion of independence. For only the siblings of the mentally retarded children, family conflict was inversely related to social competence, and family organization was positively related to sibling self concept. Our results suggest that family conflict and disorganization appear to have a more negative effect in families with a child with mental retardation.     

Selective looking by infants

Previous studies of selective looking have shown that adults and young children can easily follow one visually specified event while ignoring another on which it is optically superimposed. The present experiments show that 4-month-old infants have the same ability. Two films were shown superimposed on the same screen, while one soundtrack was played in an attempt to influence the subjects' perceptual selection. When the films were separated during test periods, the infants looked mostly at the previously silent film, suggesting that it was novel for them. Control experiments showed that completely unfamiliar films elicited comparable novelty preferences in the same situation, that the soundtrack could also influence perceptual selection during side-by-side presentation of the same films, and that cross-modal habituation to the soundtrack alone could not account for the results. Perception is inherently selective, even in the first months of life.     

Is there a constant minimum perceptual duration?

It has been suggested in the recent literature that all stimuli briefer than a critical duration have identical perceptual durations. Relevant simultaneity, reaction time, temporal order and duration discrimination data are discussed, and new data are presented. It is concluded that the relationship between the physical duration of a stimulus and its perceptual duration is not yet understood.     

Psychophysical theories of duration discrimination

There are few quantitative theories of duration discrimination and few established empirical phenomena to guide theorizing. This paper discusses three such theories and several empirical findings. The theories assume that the discrimination is based only upon information extracted from the temporal extent of the stimulus pattern, and experimental evidence is presented that clearly supports this assumption for many stimulus patterns. Recent findings which indicate that duration information is analyzed in certain ways that are fundamentally different from other stimulus dimensions are reviewed, the duration discrimination psychometric function is examined, and the time-order error is discussed. The three theories are compared in terms of their ability to incorporate the empirical data.     

Successiveness discrimination: Two models

Two models for successiveness discrimination, an attention-switching model and a duration-discrimination model, are described. Data are reported from a forced-choice successiveness discrimination task in which the standard stimulus assumed one of three values during a session. Of major interest is the ability of the models to account for the absence of observed variation in performance with changes in value of the standard. Conventional signal detection-type models or discrete state models would be unable to account for the data.     

Ideas of self and community: Ethical implications for a communitarian conception of moral autonomy

This paper attempts to construct a concept of moral autonomy thai is compatible with a relationally-based or care-based ethical theory. After critiquing the traditional liberal identification of the ethical self with an abstract rational self detached from community and historical narrative, I argue that the ethical self emerges in a dialectical relation with the community itself. Essentially, I argue for a concept of autonomy that will be analyzed as a critical perspective from within a community rather than as a privileged view from outside. Central to this argument is an understanding of the nature and role of moral conversation in the regeneration of community. The nature of that conversation is examined.     

Complexity,response competition,and preference

In an attempt to resolve disagreements about the events underlying repeated exposure to a stimulus and the affective consequences of these events, two experiments examined psychological complexity and response competition (two measures of the uncertainty produced by a stimulus) as related to each other and to liking and goodness of meaning ratings of Chinese characterlike stimuli. In Experiment 1, 60 undergraduates' mean latency of first free association to the stimuli (response competition) increased as a perfect monotonic function of the number of lines constituting them (psychological complexity). In Experiment 2, ratings of liking by 40 undergraduates were highest for stimuli associated with an intermediate level of uncertainty (psychological complexity and response competition). Thus it was speculated that a moderate number of stimulus exposures (reducing uncertainty to an intermediate level) is preferable to an indefinitely large number of exposures (reducing uncertainty to a minimal level). The finding of no relationship between rated goodness of stimulus meaning and uncertainty was judged to be consistent with Stang's (1974) hypothesis that characteristically observed increases in rated goodness with increasing stimulus exposures (decreasing uncertainty) are a result of subject intuitions rather than an effect of decreasing uncertainty.     

A developmental cross-sectioning of women's careers and marriage attitudes and life plans

A new cultural imperative, “marriage and a career,” is probably emerging. This conclusion is based on study of a random sample of 180 women (60 each) in junior high, high school, and college. Amazing consistency appeared in this cross-sectioning of women's attitudes toward Education, Occupation, Marriage, and life Plans. The cultural imperative “to marry” was present at age 12, but by adulthood, the biological surge for early marriage had been passed and/or fulfilled, and career emerged as part of a life pattern. As young women develop they become more liberal in their attitudes and desires about work, which can now be fulfilled because of the relaxing cultural interdiction against married women working.     

Concept attainment,generalization, and retention through observation and verbal coding

Observationally induced acquisition, generalization, and retention of a novel clustering concept were studied in second-graders. All children earned zero scores in baseline (which were maintained by the no-modeling controls), demonstrating initial ignorance of the concept. No extrinsic reinforcers were promised or dispensed. In separate groups, a model accompanied performance of correct responses with no verbalization, with provision of a weak verbal code, a strong verbal code, or the strong code plus a rule to guide correct response. Concept acquisition and generalization to new stimuli were found, and were partially retained at retesting after several weeks delay. Strength of immediate concept attainment and generalization were related to amount and saliency of information verbally coded by the model, but more complex results were obtained with the retention data.