The Influence of C60 Powders On Cultured Human Leukocytes

In order to check its possible acute toxicity, C₆₀ was incorporated into living human phagocytes. It was observed that C₆₀ has no influence on the survival of human leukocytes.     

Reflex modification in the rat: The inhibitory effects of intensity and frequency changes in steady tones.

Four experiments with 50 male albino Charles River rats investigated the relation between the inhibitory effects of tonal frequency change and the length of the silent period (gap) preceding it. It is noted that, in both laboratory rats and in humans, a low-intensity tone that precedes a high-intensity burst of noise by approximately 100 msec can reduce the amplitude of the startle reaction elicited by the burst of noise. Overall results show that a gap in an otherwise continuous pure tone inhibited startle when the gap occurred approximately 100 msec prior to the noise burst. Although an increase in gap duration increased the inhibition afforded by the gap, the maximum inhibition was yielded by gaps of 100 msec and greater; this maximum was equivalent to the inhibition yielded by the presentation of a postgap tone alone. A shift in tonal frequency across a 10-msec gap yielded more inhibition than did the same gap with no frequency shift; again, the shift yielded equivalent inhibition to the presentation of the postgap tone alone. An increase in the frequency shift increased inhibition when the shift occurred across a 10-msec gap but not across a 100-msec gap. It is concluded that the amount of inhibition afforded by a complex acoustic event is more than a mere additive function of the inhibitory effects of the different elements that make up the event. For example, a tonal onset is just as inhibitory as a frequency shift across a gap, which includes a tonal onset, tonal offset, and frequency shift. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Critique of Miller's "Chance, choice, and the future of reproduction."

Discusses W. B. Miller's (see record 1984-17604-001) argument that the decision of whether to have a child involves a psychological process in which an individual freely chooses from among many alternatives. It is asserted that the political context of today, in which women's reproductive rights are an issue of great controversy, constrains such ideologically based freedom. Political, legal, and social conditions that limit women's reproductive control are described. Miller's support of progenics, which favors a particular type of offspring in evolutionary terms, is questioned. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Are shame and guilt related to distinct self-discrepancies? A test of Higgins's (1987) hypotheses.

A study of 229 undergraduates examined whether specific self-discrepancies are differentially related to shame proneness and guilt proneness. Contrary to E. T. Higgins (1987), but in line with the present authors' expectations, the tendency to experience shame, but not guilt, was positively related to all types of self-discrepancies. An attempt was also made to replicate E. T. Higgins, Klein, and Strauman's (1985) findings that specific self-discrepancies are associated with distinct emotion syndromes. No support was found for the central hypotheses of self-discrepancy theory. Finally, the authors evaluated the utility of two methods for assessing self-discrepancies: Higgins's qualitative method and quantitative adjective ratings. The two methods yielded essentially identical relationships to other variables. The very high correlations among different types of self-discrepancies within each method, however, raise discriminant validity concerns. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Situational preference and alcohol consumption: Heavier drinkers prefer drinking opportunities.

Investigated the contribution of J. B. Rotter's (1954) reinforcement value (RV) construct in increasing the understanding of high risk situations. This understanding is found at the core of G. A. Marlatt and J. R. Gordon's (1985) model of addictive behavior relapse prevention. 134 undergraduates selected one of a pair of situations as being more satisfying to them. Each pair consisted of a drinking-related situation (e.g., playing pool) and a nondrinking-related situation (e.g., exercising). Heavier drinkers were significantly more likely to choose a drinking-related situation whether alcohol was explicitly mentioned or not, indicating that they preferred situations likely to increase the probability of alcohol consumption. Results are discussed in terms of implications of using the RV construct in addition to expectancy statements in predicting alcohol consumption. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Connaissance des résultats et contr?le spatiotemporel dans une tache d'anticipation-co?ncidence chez des enfants de 6 à 10 ans.

Studied the effects of knowledge of results (KR), either spatial or temporal, on performance of a coincidence-timing task among Canadian children. Human subjects: 90 male and female Canadian children (aged 6–10 yrs). Ss were divided into 3 age groups (mean age 6.8 yrs, 8.3 yrs, and 10.2 yrs). Each age group was divided into 3 experimental groups: 1 group received spatial KR, 1 group received temporal KR, and 1 group received no KR during practice sessions for a coincidence-timing task. The task consisted of moving an object horizontally with the hand to a spot corresponding to the movement of a visual stimulus. The object was to reach the correct spot at the same time as the visual stimulus, which came from either the right or the left at speeds of 100 or 152 cm/s. The results were analyzed according to Ss' age, speed of stimulus, direction of stimulus, type of KR training, and whether or not the S's object arrived before or after the visual stimulus. A multivariate analysis of variance (MANOVA) was used. (English abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)