Factor structure and stability of the Anxiety Sensitivity Index in a longitudinal study of anxiety disorder patients

The past decade witnessed considerable debate over the factor structure of the Anxiety Sensitivity Index (ASI), with an eventual consensus emerging that supported a hierarchically organized factor structure. The present study attempted to replicate and examine the overall stability and utility of the hierarchical ASI factor pattern using a large sample of outpatients participating in an ongoing longitudinal study of anxiety disorders. Results supported a hierarchical factor structure for the ASI consisting of three lower-order factors measuring physical concerns, mental incapacitation concerns, and social concerns, all of which loaded significantly on a single second-order factor. Correlational analyses show good test-retest reliability and consistent patterns of intercorrelation for these factor-derived subscales across a 10-month time frame. Additional analyses provide support for the discriminant validity of the ASI subscales with regard to individuals with specific anxiety disorders. The theoretical implications of these findings for future evaluations of anxiety sensitivity are discussed.     

Police Perceptions of Alcohol Intoxication

The accuracy of police perceptions of alcohol intoxication was assessed by comparing officers' impressions of intoxication with quantitative Breathalyzer measurements of blood alcohol concentration (BAC). Eighteen police officers predicted the BACs of 36 students who had consumed either a high or low dosage of alcohol. Results indicated that the officers could not discriminate between students who had consumed either the high or low alcohol dosage. More specifically, the officers were reasonably accurate in their predictions of students in the low alcohol condition, but they strongly underestimated the degree of intoxication of students in the high dose condition.     

Exteroception and exproprioception by dynamic touch are different functions of the inertia tensor

When an object is held and wielded, a time-invariant quantity of the wielding dynamics is the inertia tensorIij. The 3 × 3 quantityIij is composed of moments of inertia (on the diagonal) and products of inertia (off the diagonal). Examination ofIij as a function of different locations at which a cylindrical object is grasped revealed that the products related systematically to grip position (a direction), and both the products and moments taken together related systematically to the extent of the rod to one side of the hand (a magnitude in a direction). In two experiments, observers wielded an occluded rod that was held at an intermediate point along its length and reproduced both the felt grip position and partial rod length. In both experiments, perceived grip position was a function of the rod’s products of inertia and perceived partial rod length was a function of the moments and products. Discussion focuses on the specificity of exteroception and exproprioception toIij.     

Expectation affects verbal judgments but not reaches to visually perceived egocentric distances

Two response measures for reporting visually perceived egocentric distances-verbal judgments and blind manual reaches-were compared using a within-trial methodology. The expected range of possible target distances was manipulated by instructing the subjects that the targets would be between .50 and 1.00 of their maximum arm reach in one session and between .25 and .90 in another session. The actual range of target distances was always .50-.90. Verbal responses varied as a function of the range of expected distances, whereas simultaneous reaches remained unaffected. These results suggest that verbal responses are subject to a cognitive influence that does not affect actions. It is suggested that action responses are indicative of absolute perception, whereas cognitive responses may reflect only relative perception. The results also indicate that the dependant variable utilized for the study of depth perception will influence the obtained results.     

Eigenvectors of the inertia tensor and perceiving the orientation of a hand-held object by dynamic touch

Subjects wielded an object, hidden from view, and reported the orientation in which the object was positioned in the hand. The object consisted of a stem with two branches forming a V attached perpendicularly to the stem’s distal end. The branches were differentially weighted so that the same spatial orientation of the object was associated with different orientations of its principal (symmetry) axes or eigenvectors. Perceived orientation was found to be dependent on the eigenvectors of the object’s inertia tensor, computed about the point of rotation in the wrist, rather than on its spatial orientation. The results underscore the significance of the inertia tensor to understanding the perception of spatial properties by dynamic touch.     

Validation of the Preschool and Early Childhood Functional Assessment Scale (PECFAS)

Efforts to determine the prevalence of serious emotional disturbance in preschool-aged children have been hampered by the lack of a validated measure. The Preschool and Early Childhood Functional Assessment Scale (PECFAS) is a multi-dimensional measure that assesses the psychosocial functioning of children aged 3–7 years. The concurrent validity and reliability of the PECFAS were assessed in a sample of 30 preschool-aged children in a large Head Start program in Ventura, California. PECFAS ratings based on in-depth interviews were significantly related to parental ratings that the children had mental health problems, psychiatric diagnoses, teacher ratings of the child's need for mental health evaluations, teacher ratings of behavior problems on a standardized screening inventory (DIAL-R), and actual referrals for mental health evaluations. Interrater reliability for the total PECFAS score was high (r = .90) as was internal consistency of the five subscales (alpha = .86). Using the PECFAS scores as a standard, the weighted prevalence of serious emotional disturbance in this West Coast Head Start program was 17%, at the lower end of the current estimated rate of SED for older children in low income samples (18–26%).     

Perceiving the lengths of rods wielded in differentmedia

In two experiments, we investigated the ability of participants to report the lengths of rods wielded in air or water. Homogeneous aluminum rods were employed in Experiment 1. The inertia of the rods was manipulated in Experiment 2 through the use of attached masses. Although the torques required in order to wield rods in water are substantially greater than those required to wield rods in air, the perceived lengths of rods wielded in the two media were very similar. Perceived length was found to be a function primarily of inertia in both media. The experiments also revealed a small influence of resistance due to the denser medium of water. The results demonstrate the ability of perceivers to extract a physical invariant from a complex array of forces. The discussion is focused on the role of invariants in dynamic touch.     

The Role of Moral Emotions in Predicting Support for Political Actions in Post-War Iraq

A web-based study of 393 undergraduates at a public university in the United States was conducted to examine the relationship between moral emotions (i.e., emotions that motivate prosocial tendencies) and support for political actions to assist Iraqi citizens after the Second Gulf War (2003–2004). Previous work on emotions and prosocial tendencies has focused on empathy. In the context of post-war Iraq, we found that while empathy predicted support for a number of different political actions that have the potential to advance the welfare of the Iraqi people (humanitarian action in particular), guilt over the U.S. invasion was an important predictor of support for reparative actions (i.e., restoring damage created by the U.S. military), and moral outrage toward Saddam Hussein and his regime was the best predictor of support for political actions to prevent future harm to the Iraqi people and to punish the perpetrators. Our findings demonstrate the utility of an emotion-specific framework for understanding why and what type of political actions individuals will support. And in contrast to the traditional view that emotions are an impediment to rationality, our findings suggest that they can serve as a potentially powerful vehicle for motivating political engagement among the citizenry.