Memory for numbers in monolinguals and bilinguals

Forty-six subjects were assigned to two groups according to a reaction time technique: one monolingual group of 14 subjects with German as the dominant language and one group of 32 German-Swedish bilingual subjects balanced in skills. The subjects were given short-term memory tasks on numbers presented aurally and a visually presented prose text involving both short-term and long-term memory processes. The results provide evidence that two language systems actively used in daily communication affect both speed and memory span for digits: when compared with monolingual subjects, balanced bilinguals read more slowly and showed a higher error rate in the recall of two-digit numbers. The results support a hypothesis of interdependent bilingual storage.     

Predictive reaching for moving objects by human infants

To what degree do infants use a predictive strategy when reaching for moving objects? This question was studied longitudinally in five infants from 18 to 36 weeks of age. The aiming of 356 reaches were analyzed by a technique that took into consideration the three-dimensional properties of the reaches. Each reach was divided into ballistic steps and the aiming of each step was calculated and compared with an optimal value. It was found that the infants studied had an ability to reach for fast moving objects in a predictive way. Further, the results show that the predictive ability is remarkably good in the lowest age groups which suggests that it is, at least partly, prewired. What develops seems mainly to be the mobility aspects of reaching which makes for more economical and flexible reaching. Older infants reach successfully for the fast moving object also with a nonpredictive chasing strategy.     

Actors' and observers' attributions for success and failure: A comparative test of predictions from Kelley's cube,self-serving bias,and positivity bias formulations

An experiment was conducted to test implications of Kelley's cube, self-serving bias, and positivity bias formulations for attributions associated with success and failure on a test of “abstract reasoning.” Subjects either experienced or observed outcomes on three tasks. They then made attributions for only the third outcome, which was either a success or a failure. The first task was of the same type and had the same outcome as the third task, thus providing the information that the outcome being attributed was high in consistency. The second task was of a different type than the first and third tasks, and its outcome either did or did not differ from their outcomes, thus varying information about the distinctiveness of the outcome being attributed. Consensus was manipulated by presenting false norms, ostensibly from a previous experiment. In contrast to previous research, the present study included thorough checks on all of these informational manipulations. Regardless of attributor role (actor or observer), subjects attributed success more to internal than to external factors and attributed failure more to external than to internal factors. These findings indicate a general bias toward positive evaluations. Discussion centers on possible alternative interpretations of these findings, restrictions on their generality, and the limitations that they seem to impose on the applicability of the other two formulations.     

The emergence of functional play in infants: Evidence for a major cognitive transition

Sixty-four infants, eight boys and eight girls at each of four ages, $\text{9}\text{1}\text{2}\text{, 11}\text{1}\text{2}\text{, 13}\text{1}\text{2}\text{,}\text{and}\text{15}\text{1}\text{2}$ months, were observed during a 15-minute free play session. Three types of play (stereotypical, relational, and functional) and the number of appropriate uses for specific realistic toys were recorded. Stereotypical play (87% of total active play at $\text{9}\text{1}\text{2}$ months) gave way to relational (35% at $\text{13}\text{1}\text{2}$ months) and functional play (52% at $\text{15}\text{1}\text{2}$ months) as the dominant activity. Both functional play and the number of different appropriate uses of toys were rare at $\text{9}\text{1}\text{2}$ months, appeared reliably at $\text{11}\text{1}\text{2}$ months and increased lineraly through $\text{15}\text{1}\text{2}$ months. A change in the quality of play from indiscriminate mouthing, waving, banging, and fingering of objects to the matching of appropriate uses for a large array of toys indicates that the child's manipulations become more object specific and functional over this 6-month age span. Among possible explanations for the linear increase in the frequency and diversity of appropriate toy uses is the suggestion that an important cognitive change occurs toward the end of the first year of life. A case study is presented to illustrate the application of the play procedure for both assessment and treatment.     

Career commitment processes in the young adult years: An illustration from the ROTC/Army career path

This paper presents and tests a model of career commitment in the young adult years. Data for the study were collected from nationwide stratified random samples of approximately 1000 high school seniors, 1600 college students, and 600 ROTC-graduate Army officers. It was found that the model could predict membership in ROTC and the strength of the individual's commitment to a military career and that hypotheses that had been made about the career commitment process were generally confirmed. Many of the specific findings, differences in the demographic, aptitude, and sociopsychological profile of participants and nonparticipants in a career path, the widening of these differences with the passage of time, the importance of early exposure to the career eventually chosen, the relationship between initial motivation in exploring a career path and subsequent commitment to the career, and the changes in the nature of influential factors as an individual matures, may be generalizable to other types of careers.     

The role of self-esteem and locus of control in the differential prediction of performance,program satisfaction,and life satisfaction in an educational organization

The present research was an attempt to examine the role of task-specific self-esteem Korman, 1966, Korman, 1976 and locus of control (Rotter, 1966) in the differential prediction of academic performance, program satisfaction, and personal life satisfaction. Based on earlier research and theory in this area, it was predicted that (1) high task-specific self-esteem individuals would perform better, would be more satisfied with their program of studies and their personal lives compared to low task-specific self-esteem individuals, and (2) individuals with an internal locus of control would also perform better, would be more satisfied with their program of studies and their personal lives compared to individuals with an external locus of control. These hypotheses found strong empirical support in the study. The findings are interpreted as being strongly supportive of Korman's theory on the role of task specific esteem and Rotter's theory on the concept of locus of control in the prediction of certain select organizational outcomes.     

The sufficient conditions for directed forgetting in normal and educable mentally retarded adolescents

A series of studies investigated the conditions under which normal and educable mentally retarded adolescents (13 to 15 years old) would or would not disregard irrelevant information in memory. A directed forgetting task was used in which the person was required to recall short sequences of picture names. In some sequences there was a cue to forget the first few pictures (irrelevant information) and to remember only the subsequent pictures (relevant information). When normal adolescents were given no explanation of the forget cue, there was interference from the irrelevant information. A minimum explanation of the cue, however, was sufficient to eliminate interference for the normal adolescents. The same minimal explanation was not sufficient for mentally retarded adolescents. It was clear that irrelevant information in memory interfered with the performance of retarded adolescents given only a minimal explanation of the forget cue. These results are important since most naturalistic situations do not involve an elaborate explanation of the importance of disregarding irrelevant information previously stored in memory.     

Intelligence research at the interface between differential and cognitive psychology: Prospects and proposals

There seems to be widespread agreement among theoreticians and methodologists alike that new approaches to studying intelligence should somehow combine the differential and cognitive (information-processing) approaches that have been used in the past, and that the combination should somehow enable the investigator to isolate components of intelligence that are elementary (at some level of analysis). Researchers disagree, however, as to how the differential and cognitive approaches should be combined, and consequently, in how elementary components of intelligence should be isolated and in what they are. How does an investigator choose from among the multiple paths available for theory and research? In this article, I propose some guidelines that may help investigators make informed choices. The article is divided into three major parts. In the first, I propose guidelines for choosing from among various methodologies for studying intelligence, and then describe briefly at least some of the methods that meet (or come close to meeting) these guidelines. In the second part, I propose guidelines for the specification of subtheories (and eventually, full-fledged theories) of intelligence, and illustrate how these guidelines can be met. Finally, I describe the direction in which I believe our subtheories and methods should lead us.