A comparison of several procedures for eliminating behavior

The pecking response of pigeons was reinforced when a minimum period of time had elapsed since the last response (DRL schedule of food-reinforcement). Punishment, satiation, extinction, and stimulus change were employed separately to reduce responding. When the effects of the four procedures were compared, punishment was found capable of producing a more immediate, complete and long lasting response reduction than the others. Punishment had its maximum effect on the responses that were least relevant to reinforcement. The punishment reduced the frequency of the short inter-response times to a greater extent than did either extinction or satiation. In this way, punishment actually increased the efficiency of the DRL responding.     

持续性联结及其与丧亲后适应的关系

生者与逝者的关系不会因为死亡而终止, 在逝者离世之后, 生者可能继续与逝者保持持续的、内在的联结, 这被称为“持续性联结”。持续性联结在不同文化中均普遍存在, 已有研究从联结控制点、联结的引发者等维度对其进行分类, 近年来, 持续性联结对丧亲后适应的影响成为丧亲及哀伤研究中的热点。持续性联结与丧亲后适应的关系呈现出复杂且不一致的研究结论。未来的研究应该在本土文化背景下去探索持续性联结的表现及特定意义, 思考持续性联结的分类并编制本土化的测量工具, 与此同时, 应该在理论驱动下去开展持续性联结与适应关系的实证研究。     

Goal agreement and relationship quality among college students and their parents

Two hundred eight parent–college student dyads (total N = 416) participated in the current study, which examined the link between goal agreement and perceived conflict within their relationships. Undergraduate participants (91 male, 117 female) completed a demographic form, a 65 items goal measure, and a measure of parental conflict. Parents (98 fathers, 110 mothers) were asked to rate the importance of the same 65 goals for their emerging adult children. College students tended to place more importance on independence, affect control, health, social relationships, and financial concern goals than their parents did, whereas parents placed more importance on moral and religious goals than their emerging adult children did. However, relative goal agreement between parents and college students was found to be moderately high. Those parent–college student dyads who experienced less conflict tended to have higher goal agreement, whereas those dyads with a higher level of conflict had lower goal agreement. These findings provide further evidence for the link between interpersonal relationships and the personality construct of goals.     

Trust in organismic development, autonomy support, and adaptation among mothers and their children

The current studies examined relations between mothers’ trust in organismic development, autonomy supportive parenting, and adaptation among mothers and their young children. Study 1 showed that trust in organismic development was distinct from optimism, neuroticism, and social desirability whereas it correlated with having relaxed expectations for developmental milestones and making fewer social comparisons about one’s child. Study 2 used observational methods to demonstrate a significant link between trust in organismic development and mothers behaving in an autonomy-supportive rather than controlling manner toward their 1-year-old child during puzzle solving activities. Study 3 used a 1 year prospective design to show that trust in first time mothers was associated with better maternal and child adaptation over time, controlling for initial levels of adaptation and child temperament. Study 4 explored possible social/political antecedents of trust in organismic development by comparing the beliefs of first time mothers from Canada and Norway. The four studies suggest that trust in organismic development fosters autonomy supportive parenting practices and positive maternal and child adaptation. These findings are discussed from the perspective of self-determination theory.

Parenting styles and their relationship with hyperactivity

The present study aims to determine the relationship among factors that make up the parenting styles according to the PCRI (Parent-Child Relationship Inventory) and hyperactivity reported by parents through the BASC (Behaviour Assessment System for Children). We selected a sample of 32 children between 3 and 14 years old (23 male and 9 female) with risk scores in hyperactivity and another similar group with low scores in hyperactivity. After administering both instruments to the parents, we carried out a binomial logistic regression analysis which resulted in a prediction model for 84.4% of the sample, made up of the PCRI factors: fathers' involvement, communication and role orientation, mothers' parental support, and both parents' limit-setting and autonomy. Moreover, our analysis of the variance produced significant differences in the support perceived by the fathers and mothers of both groups. Lastly, the utility of results to propose intervention strategies within the family based on an authoritative style is discussed.     

A behavioral and genetic dissection of two forms of olfactory plasticity in Caenorhabditis elegans: adaptation and habituation

Continuous presentation of an olfactory stimulus causes a decrement of the chemotaxis response in the nematode Caenorhabditis elegans. However, the differences between the learning process of habituation (a readily reversible decrease in behavioral response) and other types of olfactory plasticity such as adaptation (a decrement in response due to sensory fatigue, which cannot be dishabituated) have not been addressed. The volatile odorant diacetyl (DA) was used within a single paradigm to assess the distinct processes of olfactory adaptation and habituation. Preexposing and testing worms to 100% DA vapors caused a chemotaxis decrement that was not reversible despite the presentation of potentially dishabituating stimuli. This DA adaptation was abolished in worms with an odr-10 mutation (encoding a high-affinity DA receptor on the AWA neuron), even though naive chemotaxis remained unaffected. Conversely, DA adaptation remained intact in odr-1 mutants (defective in AWC neuron-mediated olfactory behavior), even though naive chemotaxis to DA decreased. Surprisingly, exposure to vapors of intermediate concentrations of DA (0.01% and 25%) did not cause worms to exhibit any response decrement. In contrast to preexposure to high DA concentrations, preexposure to low DA concentrations (0.001%) produced habituation of the chemotaxis response (a dishabituating stimulus could reverse the response decrement back to baseline levels). The distinct behavioral effects produced by DA preexposure highlight a concentration-dependent dissociation between two decremental olfactory processes: adaptation at high DA concentrations versus habituation at low DA concentrations.     

Young women with and without non-suicidal self-injury: A comparison of romantic relationship functioning

IntroductionThe interpersonal context of an individual struggling with non-suicidal self-injury (NSSI) is of critical importance.ObjectiveThe purpose of the current study is to offer, through a dyadic perspective, a unique portrait of the relevant indicators of romantic relationship functioning (i.e., romantic attachment, dyadic trust, dyadic coping, relationship satisfaction, and caregiving) that distinguish young women who have engaged in NSSI from those who have not.MethodParticipants consisted of 20 women who indicated having engaged in NSSI in the past six months and 20 women who indicated having never engaged in NSSI, along with their respective partner.ResultsResults revealed that women who engaged in NSSI were more likely to report subjective distress in the form of attachment anxiety and distrust, as well as lower relationship satisfaction and adaptive dyadic coping strategies, compared to women who had never engaged in NSSI. Findings also showed that partners of women who engaged in self-injury reported more attachment anxiety than partners of women who do not engage in NSSI.ConclusionThese results highlight the importance of romantic relationship dynamics and the potential associations with engagement in self-injurious behaviors, which has implications for the development of effective prevention and intervention strategies.     

Identity and intimacy crises and their relationship to internet dependence among college students.

In an attempt to test Kandell's proposition that internet dependents used the internet as a coping mechanism against underlying psychological issues, this study investigated the extent to which the fifth and sixth Eriksonian crises (identity, intimacy), were related to internet dependence (online chatting, gaming) among college students. Students spending more than 10 hours per week on chatting/gaming were classified as dependents. On the basis of a national sample of freshmen in Taiwan, this study found that the dependents scored significantly lower on most of the measures that reflected the successful resolution of the crises, and higher on the measures that reflected unsuccessful resolution of the crises. Kandell's proposition was supported.     

Perceived relationship with God moderates the relationship between social comparison and body appreciation

Social comparison has been shown to contribute to the negative attitudes that most Western women have towards their bodies. However, minimal research has addressed the relationship between social comparison and body appreciation, which entails holding favourable opinions towards the body, accepting the body along with its deviations from societal beauty ideals, respecting the body by engaging in healthy behaviours, and protecting the body by rejecting unrealistic media appearance ideals. This study tested whether feeling loved and accepted by God would weaken the inverse relationship between social comparison and body appreciation among a sample of 186 female undergraduates. Results showed that frequent body-related comparisons were related to lower body appreciation, but this relationship was conditional upon the quality of women's perceived relationship with God. Results suggest that future research should explore interventions designed to create improved secure attachment relationships between clients and God.     

Stability and change in mothers' representations of their relationship with their toddlers.

This study examined several issues in the developmental dynamics of parents' representations of their relationship with their toddlers. The authors studied 125 mothers and their firstborn toddler sons over a 13-month period. Mothers took the Parent Development Interview twice, when children were 15 and 28 months of age. Home observations of parent-child interactions and maternal ratings of daily hassles were collected when children were 21 and 27 months of age. The 3 factors that characterized mothers' representations of their 15-month-old firstborn sons (Joy-Pleasure/Coherence, Anger, Guilt-Separation Distress) also fit the data very well for their 28-month-old sons. Although there were no changes in average levels of mothers' (a) joy, pleasure, and coherence and (b) guilt and separation distress from 15 to 28 months, there was a significant increase in mothers' levels of anger. Stability analyses suggested a dynamic relationship between mothers' representations of joy, pleasure, and coherence and of anger over the 13-month period. Finally, changes in mothers' representations were predictable by positive mothering (which led to increased joy, pleasure, and coherence) and by parenting daily hassles (which led to more anger).     

A comparison of the effects of formal similarity among trigrams and among word triads

The central question of this report concerned the role of formal similarity in free recall of lists of trigrams and lists of three-letter word triads. Similarity was manipulated among trigrams by duplicating letters and among triads by duplicating words. An initial study showed that lists of 16 letters were learned more rapidly than a list of 16 three-letter words. Therefore, in the major experiment, the Ss were given all appropriate elements on test trials so that only associative learning was required. Increases in formal similarity caused decreases in rate of learning for both types of lists, and the mechanisms of the interference seemed to be the same for both types of lists, However, the learning of the trigram lists was more rapid than the learning of the triad lists, the difference being maximal with low similarity.     

大学生人际关系中的普遍性缺陷及产生的原因与对策

当代大学生面临着人际交往的困惑。本文阐述了大学生人际关系中的普遍性缺陷,并从生理、思想观念、心理、经济条件、生活环境以及社会文化等各方面深入探讨了大学生人际关系缺陷产生的主要原因,并为解决大学生人际关系缺陷问题提出了自己的看法。     

Visuomotor adaptation and its relationship with motor ability in children with and without autism spectrum disorder

The high prevalence rates of motor impairments among individuals with autism spectrum disorder (ASD) lead to increased attention to motor learning. The current study examined the visuomotor adaptability in children with and without ASD using a computerized visuomotor adaptation task in which the real-time visual feedback of hand movement was rotated. The relationships between visuomotor adaptability and clinical symptomology were also investigated. Results revealed that the children with ASD showed a slower rate of improvement and smaller after-effects than their peers on the measures of motor planning. Additionally, autistic characteristics significantly moderated the association between individuals' adaptability and fine motor skills. The findings contribute to the growing evidence of compromised visuomotor adaptability, which suggested the importance of addressing these clinical features of ASD.