An olfactometer for small rodents

An olfactometer that captures and delivers biological odors at experimenter-controlled times, without dilution, is described. The apparatus is quiet, efficient, versatile, animal-safe, and fairly inexpensive. Tests indicate that the device is successful in isolating transitory odors.     

An isolation effect in serial memory for spatial information

This paper reports the first demonstration of an isolation effect or von Restorff effect (von Restorff, 1933) in the context of a spatial-memory task: Short-term serial recall was enhanced for both the location and the serial position of one red dot presented amongst a sequence of otherwise black dots. When the serial position of the isolate was fixed, the spatial isolation effect only emerged when participants received a control block of trials before the block of isolation trials (Experiment 1). However, when the serial position of the isolate was varied across isolation trials, an isolation effect was still produced regardless of condition order (Experiment 2). It is suggested that both temporal grouping strategies and greater item-specific processing may have contributed to the enhanced retention of the isolate.     

An isolation effect in serial memory for spatial information

This paper reports the first demonstration of an isolation effect or von Restorff effect (von Restorff, 1933 von Restorff, H. 1933. Uber die Wirkung von Bereichsbildungen im Spurenfeld [On the effect of spheres formations in the trace field]. Psychologische Forschung, 18: 299–342. [Crossref] , [Google Scholar]) in the context of a spatial-memory task: Short-term serial recall was enhanced for both the location and the serial position of one red dot presented amongst a sequence of otherwise black dots. When the serial position of the isolate was fixed, the spatial isolation effect only emerged when participants received a control block of trials before the block of isolation trials (Experiment 1). However, when the serial position of the isolate was varied across isolation trials, an isolation effect was still produced regardless of condition order (Experiment 2). It is suggested that both temporal grouping strategies and greater item-specific processing may have contributed to the enhanced retention of the isolate.     

浅谈振动与人体的关系

通过探究振动的物理性质,从声波振动、脏器振动、细胞振动、振动与维生素的吸收等四个角度分析了振动与人体生理及健康的关系,说明振动在保健、养生、治病中的重要性,从而利用振动与人体的关系来维持人体的健康.     

浅谈振动与人体的关系

通过探究振动的物理性质,从声波振动、脏器振动、细胞振动、振动与维生素的吸收等四个角度分析了振动与人体生理及健康的关系,说明振动在保健、养生、治病中的重要性,从而利用振动与人体的关系来维持人体的健康。     

Exploratory factor analysis for small samples

Traditionally, two distinct approaches have been employed for exploratory factor analysis: maximum likelihood factor analysis and principal component analysis. A third alternative, called regularized exploratory factor analysis, was introduced recently in the psychometric literature. Small sample size is an important issue that has received considerable discussion in the factor analysis literature. However, little is known about the differential performance of these three approaches to exploratory factor analysis in a small sample size scenario. A simulation study and an empirical example demonstrate that regularized exploratory factor analysis may be recommended over the two traditional approaches, particularly when sample sizes are small (below 50) and the sample covariance matrix is near singular.     

Social isolation and gender

This study investigated the relationship between gender and social support. It was found that men were more isolated than women although there were no gender differences in perceived adequacy (i.e., satisfaction with one's social support network) or network size. Given that both the adequacy and network size variables were associated with socially desirable responding but the isolation variable was not, the results suggest that the behaviorally oriented indicator of isolation was a better measure of the degree of social isolation than traditional subjective scales currently used by many researchers. This suggests that traditional measures of social support that incorporate the dimensions of network size and perceived adequacy of one's social support system need to control for socially desirable responding and that measures can and need to be developed that are not significantly influenced by this response set bias. Hence, the assessment of social support may need to be more multifaceted than is currently undertaken in many studies. Our finding that men reported being more isolated than women may be a function, in part, of the fact that the majority of the sample (76.7%) was single/did not live with a partner. Previous research has found that men generally get their emotional needs met by their spouses/partners while women often get their emotional needs met by their female friends. Consistent with the literature, and given that most of our respondents were single, this study supports the contention that men are generally more socially isolated than women because they do not create adequate emotional intimacy when they are not in partnership with a significant other.     

Social isolation and gender

This study investigated the relationship between gender and social support. It was found that men were more isolated than women although there were no gender differences in perceived adequacy (i.e., satisfaction with one's social support network) or network size. Given that both the adequacy and network size variables were associated with socially desirable responding but the isolation variable was not, the results suggest that the behaviorally oriented indicator of isolation was a better measure of the degree of social isolation than traditional subjective scales currently used by many researchers. This suggests that traditional measures of social support that incorporate the dimensions of network size and perceived adequacy of one's social support system need to control for socially desirable responding and that measures can and need to be developed that are not significantly influenced by this response set bias. Hence, the assessment of social support may need to be more multifaceted than is currently undertaken in many studies. Our finding that men reported being more isolated than women may be a function, in part, of the fact that the majority of the sample (76.7%) was single/did not live with a partner. Previous research has found that men generally get their emotional needs met by their spouses/partners while women often get their emotional needs met by their female friends. Consistent with the literature, and given that most of our respondents were single, this study supports the contention that men are generally more socially isolated than women because they do not create adequate emotional intimacy when they are not in partnership with a significant other.