阻碍条件性恐惧记忆消退的原因分析

创伤后应激障碍是个体经历严重应激后形成的一种焦虑障碍,对其治疗的关键是消退由创伤应激导致的条件性恐惧记忆,但目前最有效的暴露疗法并不能真正有效地抑制患者恐惧记忆的表达.对条件性恐惧的动物模型研究发现情绪性增强效应、恐惧记忆二级条件化与再巩固、内侧前额叶皮层功能不足等均能够阻碍条件性恐惧记忆的消退.针对这几个方面可以探索治疗创伤后应激障碍的相应方法.     

The Traditional Explanation for Resistance Versus Attitude Accessibility

This investigation compared the traditional explanation for the way inoculation confers resistance to influence with an alternative rationale for resistance based on attitude accessibility. Four hundred forty‐three participants took part in the investigation in four phases spanning 54 days. The combined multiple regression and structural equation modeling results suggest that the traditional and alternative explanations for the way that inoculation confers resistance involve separate processes; counterarguing and accessibility appear to be distinct tracks en route to resistance, but the two explanations also are overlapping processes in which elicited threat plays an integral role.     

The effect of motivation and word characteristics on recognition

Two tachistoscopic studies assessed the effects of motivation on high-speed word processing. Study 1 assessed the effect of anxiety and Study 2 the effect of hunger compared to satiation. Words differed in interletter associative frequency (generated value), Thorndike-Lorge word frequency, and categories. In both studies, all three word variables yielded significant main effects. Motivational relevance of words did not significantly alter word recognition, the food words being most readily recognized and negatively emotional words least readily recognized in both studies. Anxiety did not have a significant effect, but hunger in interaction with word characteristics was found to be facilitating. Contrary to Hullian theory regarding word dominance and drive interaction and to Broadbent's "filtering" hypothesis, hunger in comparison to satiation increasingly facilitated word recognition the more infrequent the words and the more rare were the interletter associations.     

Sexual activity and satiety over an extended observation period in prairie voles (Microtus ochrogaster)

This study was designed to delineate the course of sexual satiation in prairie voles (Microtus ochrogaster). Fourteen male-female pairs were allowed to copulate freely for 24 hr under continuous observation. Copulations occurred predominantly during the first few hours and decreased in frequency thereafter. The mean number of ejaculations per pair was 5.6 (range, 2-9). Two thirds of the ejaculations occurred during the first 3 hr, and over 90% took place within the first 7 hr after the first intromission. No ejaculations were observed during the last 8 hr. These results suggest that male capacity to deliver ejaculations to a female is limited and that direct observations reveal a more limited capacity than observations made with time-lapse videotape.     

The eating behavior of obese and nonobese women

Sixty-one obese, normal weight and thin women were observed for 30 minutes as they consumed a free-choice lunch in a quasi-naturalistic setting. Their behavior was unobtrusively quantified in terms of microbehavior (mouthfulls, chews, drinks and pauses) and of the macrobehavior (type and amount of food consumed and total active eating or drinking time). Information on subject and environmental variables are also reported. Observed behavior was analyzed as comparative group totals and as patterns of behavior over time. Comparison of group totals showed that: (a) there were no differences in types of food or number of calories consumed between the three groups, (b) no differences were found between the eating behavior of the normal weight and the obese and (c) the obese women spent less time actively eating, less time chewing and more time drinking than did the thinnest group. Pattern analysis revealed a decrease in all responses over time but showed no significant pattern difference between groups.     

Applying principles of development to help at-risk preschoolers develop numeracy

In a yoked control design, multicultural Head Start 4-year-olds played numerous games involving either numeracy or the oddity principle and insertions into series. Children showed better mastery of oddity and insertions after playing games directed at those two concepts. Numeracy scores on the McCarthy Scales of Children's Abilities (D. McCarthy, 1972) were equivalent for children who played numeracy games and children who played oddity and insertion games. These results are consistent with other research indicating that the understanding of oddity relations and that of insertions are key transitional thinking abilities that support numeracy at the preschool-kindergarten interface.     

The application of Sheppard's correction for grouping

This paper attempts to show in a non-mathematical way the influence of grouping on standard deviations and correlations, and advances empirical evidence to illustrate with what accuracy values corrected for grouping by Sheppard's correction approximate to values obtained from ungrouped data when the distributions are continuous. This enquiry gained its initial stimulus from the observation that many standard deviations and correlations reported by students of psychology and education are uncorrected for grouping and that frequently errors attributable to the grouping of data are not small when compared with errors of sampling.     

The Others: Finding and Counting America's Invisible Churches

The 2010 U. S. Religious Census: Religious Congregations and Membership Survey (RCMS) is the most comprehensive picture of U.S. religious life, county by county. How thorough is the RCMS in covering local religious groups? To answer this question, three county snapshots were performed with collected data compared to the RCMS 2010 reported numbers. Data suggest that there has been an underreport by as much as 25 percent of the number of local congregations in these counties. New and emerging religious movements and denominations as well as ethnic congregations comprise much of this percentage, making it more imperative for scholars to develop methodologies and frameworks in order to capture these “others” and invisible churches in America.