Instrumentation for an electrocutaneous communication device

The device described is a prototype that uses spatiotemporal resolution for electrocutaneous stimulation. Signals initiated through a keyboard activate a matrix of four electrodes that may be applied to the fingers, forearm, abdomen, back, or other parts of the integument. The instrumentation described includes a pulse generator, the active time and delay time controls, the control of the total length of a pulse train, and the constant-current generators whose output is fed into the electrodes. This device may be used as an interface with an alphanumeric device (e.g., a calculator or computer) and as a basic instrument in research investigating the spatial and temporal resolving capacities of the skin senses.     

What’s good for me depends on what I see in you: Intimacy avoidance and resources derived from close others

Past research has demonstrated that comfort with intimacy differentially affects the extent to which a person assimilates/contrasts to a close other. Specifically, individuals comfortable with intimacy benefit most from assimilating to those who embody positive aspects, whereas individuals uncomfortable with intimacy benefit most from contrasting to those who embody a mix of positive and negative aspects. Using a multi-method approach, the current research provides evidence suggesting that both those who are positively regarded and those who engender mixed feelings have the potential to benefit the perceiver differentially as a function of the types of traits that are most salient at the time. In Study 1, consistent with predictions, high-avoidant individuals contrasted to the salient traits of a romantic partner and performed better on an intelligence test after thinking about their partner’s unintelligent compared to intelligent traits, whereas low-avoidant individuals assimilated. In Study 2, high-avoidant individuals contrasted to friends’ traits and exhibited more positive cardiovascular responses (i.e., greater challenge) while talking about friends’ negative traits and more negative responses (i.e., greater threat) while talking about friends’ positive traits. Together, these findings suggest that there are situations during which low- and high-avoidant individuals differentially benefit from highly regarded close others.     

Factor Retention Using Machine Learning With Ordinal Data

Determining the number of factors in exploratory factor analysis is probably the most crucial decision when conducting the analysis as it clearly influences the meaningfulness of the results (i.e., factorial validity). A new method called the Factor Forest that combines data simulation and machine learning has been developed recently. This method based on simulated data reached very high accuracy for multivariate normal data, but it has not yet been tested with ordinal data. Hence, in this simulation study, we evaluated the Factor Forest with ordinal data based on different numbers of categories (2–6 categories) and compared it to common factor retention criteria. It showed higher overall accuracy for all types of ordinal data than all common factor retention criteria that were used for comparison (Parallel Analysis, Comparison Data, the Empirical Kaiser Criterion and the Kaiser Guttman Rule). The results indicate that the Factor Forest is applicable to ordinal data with at least five categories (typical scale in questionnaire research) in the majority of conditions and to binary or ordinal data based on items with less categories when the sample size is large.     

Ambient Green and Creativity

This research examined an important applied question: whether viewing ambient green (relative to red) on the wall of a workspace would facilitate creativity. A methodologically sound experiment revealed no influence of green on creativity. Care must be taken when interpreting a null result, but these data do not provide support for the presence of a relation between ambient green and creativity. This research also highlights the need for more research in the area of ambient color and psychological functioning, and the need for caution regarding the tendency to move to real-world recommendations before a firm empirical base is established.