On the development of encoding in anticipation of various tests of retention

Abstract.— Seven, 9, 12–13, and 18–21-year-old subjects learned a pictorial material in anticipation of free recall (FR), serial recall (SR), or recognition tests. Type of anticipated test and test actually given were factorially combined, retention being tested after 2 min or after 2 weeks. Recall performance improved with age but recognition performance did not improve after CA 9. Differential anticipation had little effect on the performance of the youngest children. For older subjects the effects were clear-cut and similar at all age levels and at both retention intervals. SR and recognition performance was best when subjects anticipated these tests, respectively; anticipation of recognition interfered with recall performance, and vice versa. The main age-related improvement occurred between age levels 7 and 9.     

Effects of context variation, intracategory variation, and spacing on the free recall of pictures

Abstract.— Two experiments examined the effects of encoding variability on the free recall of pictures. In Expt. I, drawn objects were presented 3 times in different pictorial contexts (RV) or in the same contexts (RR). In Expt. II, repeated stimuli were 3 different specimens of the same object category (VR) or the same object presented 3 times (RR). Spacing of repetitions was varied from zero to 15, and a mixed-list design was used. Both RV and VR items tended to be recalled better than and prior to RR items. Recall of RR and of VR items increased with increasing spacing, but recall of RV items showed no spacing effect. In a second recall test, preceded by 4 min of "thinking about" the pictures, the only remaining effect of spacing or of context variation was a low recall of massed RR items. VR items were still recalled better than and prior to RR items. It is suggested that spacing, and variation of the external context of pictures, facilitate retrieval when the time and effort spent on recall is limited, by increasing the numberlvariety of potential recall cues stored together with item information.     

Catching skills in infancy

Infants were induced to reach for fast moving objects whose velocity and starting position varied. Altogether, 144 reaches were analyzed by a technique that took into consideration the three-dimensional properties of reaches. It was found that reaches in all conditions were aimed close to the meeting point with the object. The precision in timing of a reach was about a twentieth of a second, and the systematic timing errors were close to zero. The results suggest that the infant reaches in reference to a coordinate system fixed to the moving object instead of to the static background, that is, the infant's hand is moved with the object at the same time as it is moved toward the object. It is concluded that the capacity to time and coordinate one's movements in the catching of a moving object is a very basic and early developed skill.     

When rigidity does not fail: Individualization and psychologization as resistances to the diffusion of minority innovations

Studied the impact of individualization and psychologization of minorities upon their influence. In Experiment I, 72 Swiss male and female 15-year-old students read a text on pollution prepared in a 2 × 2 ANOVA-design (one/ two sources, rigid/flexible style) and reported their impression of the content. As below, attitude was measured before and after reading. In Experiment II, 24 second-year Swiss psychology students judged the presumed author of an anti-militaristic tract by adjectives with either merely political or political and psychological connotations. Results indicate that the strong difference between flexible and rigid style appears with one source only, but that independent of the number of sources, a rigid style obtains a less positive image. Change of attitude in moderate subjects judging with political adjectives only vanished in those using psychological adjectives in addition. As a rigid minority only tacks influence when individualized and as psychologization constitutes an ideological functioning of resistance to social change, psychological research, by its current strategies, might be participating in such resistance.     

Temperamental consequences of infant difficultness

Two central issues pertaining to the construct of infant temperamental “difficultness” were investigated in this longitudinal project. First, the cross-time convergent validity of two parent-report measures of temperament was examined. Second, the temperamental consequences of difficultness during infancy were studied by prospectively following children from infancy to adolescence. Additionally, using MANOVA and structural equation modeling, gender comparisons were conducted to determine whether or not the construct of difficultness was similar for males and females. Analyses were based on parent reports (Ns=96−110) of infant difficultness on the Infant Characteristics Questionnaire (ICQ) when children were 18 months of age. The nine temperament dimensions of the New York Longitudinal Study model were also assessed by parent report inventories when children were 2, 3, 3.5, 5, 8, 10, and 12 years old. Results showed no pervasive evidence of gender differences in infant difficultness. Convergent validity between the ICQ and subsequent temperament measures was evidenced by significant cross-time canonical correlations reaching to moderate magnitude and significant bivariate correlations between infant difficultness and specific temperament dimensions. Temperamental difficultness during infancy predicted subsequent adverse temperamental qualities such as unadaptability and negative mood at every age from 2 through 12 years.     

Building a research base for community services for children and families: What we know and what we need to learn

We examine the knowledge base for community-based mental health services for youth and their families. A brief historical perspective on the development of community services is presented, and the fundamental components of a comprehensive child mental health service system are described. Outcome studies for service components as well as the service system as a whole are summarized. Research related to the context of treatment, i.e., service setting, cost, is presented. The authors conclude that a research base for child and family services is emerging, but there is still a paucity of well designed studies that address the complexities of a community-based system as well as the critical outcome questions that need to be addressed. Finally, promising service system developments are described and recommendations for future research are presented.     

Trading accuracy for speed: gender differences on a Stroop task under mild performance anxiety.

A standard Stroop task was used to examine the effect of performance anxiety on 58 male and 69 female undergraduates. Subjects were approached either by two casually dressed experimenters who did not stress speed or accuracy or by 4 or 5 formally dressed experimenters who stressed quick and accurate performance. Subjects were told the test would assess their "mental acuity"; their responses were visibly tape-recorded. Reaction times did not show differential response by anxiety condition; men and women showed different RTs only in the low-anxiety condition, with women performing significantly more slowly. There were no significant differences for the high-anxiety condition. Analysis of errors showed women were more accurate than men. Men traded accuracy for speed and may have been under equal performance stress in both situations. When performance was not stressed, women were slower and more accurate than men. When performance was stressed, women increased their speed to match that of men while maintaining their greater accuracy.