Screening people with anxiety/depression for suitability for guided self-help

The aim of this study was to test a questionnaire for screening people with anxiety/ depression for their suitability for certain forms of computer-guided self-help. A total of 196 referrals completed the screening questionnaire. Three clinicians each independently judged the referrals' broad problem type and suitability. Referrals were randomized to 1 of 3 clinicians for a screening interview. The results show that inter-clinician agreement was good for questionnaire-based problem type and suitability, and excellent for screening interview-based problem type and suitability. Agreement between the questionnaire and interview was good on problem type but poor on suitability. Compared with the screening interview, the questionnaire detected suitable patients well but unsuitable patients less well. In conclusion, by quickly scanning the completed questionnaire, clinicians were able sensitively to detect patients' problem types that were suitable for certain forms of self-help. Some unsuitability items need refining.     

Changes in interhemispheric transfer rate and the development of bimanual coordination during childhood

Based on recent models of the ontogeny of memory (Nelson, 1995), we hypothesize that 6-month-old infants should show evidence of repetition priming. Event-related potentials were recorded from 11 scalp sites to novel and primed upright and inverted faces. In Experiment 1 (n = 24), 6-month-old infants viewed faces that were repeated after 6 to 12 images. Overall, repeated faces demonstrated greater negativity than novel faces and upright faces demonstrated greater negativity than inverted faces. In order to ground these results in an adult model, a group of adults (n = 30) was tested in a similar experiment. Here we observed effects of repetition at an early positive component labeled the P150 as well as at the P300, with repeated images being more positive than novel images. These data support the idea that infants at 6 months are capable of revealing electrophysiological evidence of perceptual priming.     

Cross-modal enhancement of perceived brightness: sensory interaction versus response bias

Stein, London, Wilkinson, and Price (1996) reported the presence of cross-modal enhancement of perceived visual intensity: Participants tended to rate weak lights as brighter when accompanied by a concurrent pulse of white noise than when presented alone. In the present study, two methods were used to determine whether the enhancement reflects an early-stage sensory process or a later-stage decisional process, such as a response bias. First, enhancement was eliminated when the noise accompanied the light on only 25% versus 50% of the trials. Second, enhancement was absent when tested with a paired-comparison method. These findings are consistent with the hypothesis that the sound-induced enhancement in judgments of brightness reflects a response bias, rather than an early sensory process--that is, enhancement is the result of a relatively late decisional process.     

Construct validity of the Vividness of Visual Imagery Questionnaire

Chara (1989) recently questioned the construct validity of the Vividness of Visual Imagery Questionnaire (VVIQ) on empirical grounds. Unfortunately, Chara in that paper has erroneously construed construct validity as independent of criterion-related validity. This error is compounded by Chara and Verplanck's 1986 assumption that the VVIQ assesses purely memory imagery. Further problems arise from Chara's 1989 selective reporting of the relevant literature. Comprehensive review of the VVIQ literature in its totality is necessary before conclusions are possible concerning the questionnaire's construct validity.     

Path model of multidimensional compliance with cancer therapy

Patients newly diagnosed with hematologic malignancies were followed for a 6-month treatment period to assess compliance with three regimen requirements for cancer therapy: anti-neoplastic medication self-administered intermittently, supportive medication self-administered daily, and monthly clinic appointments. The effect on compliance of three intervention "packages" (some combination of education, shaping of pill-taking behavior, and home restructuring) and the extent that patient satisfaction, knowledge, and uncertainty about illness-related events mediated the effects of the interventions were also examined. Blood levels of the drugs and self-report measures indicated that compliance with daily pill taking was higher for each intervention group compared to a control group. Similar results were obtained for compliance with clinic appointments. No improvement in intermittent self-medication was found. Although each intervention package increased patient knowledge and satisfaction, path analyses demonstrated that knowledge did not affect any aspect of compliance, whereas satisfaction was associated with increased appointment keeping only. Daily pill taking was influenced directly by the behavioral components of the interventions. Uncertainty did not influence compliance but was associated with depression, which was negatively correlated with intermittent self-medication.     

The stability of resting metabolic rate and diet-induced thermogenesis in children

The stability of resting metabolic rate and diet-induced thermogenesis was assessed in a group of 8- to 12-year-old children over two sessions. Children were first oriented to the laboratory and participated in a practice session to adapt them to the laboratory procedures. The two metabolic sessions began with the measurement of resting metabolic rate. The children were then provided a caloric challenge, with metabolic measures taken at 30-min intervals for 150 min. Results showed stable resting and integrated diet-induced thermogenic responses across sessions. Differences in the pattern of response from 30 to 60 min were observed, with the response peaking earlier in the first session.This experiment was supported in part by Grant HD19532 NICHD awarded to the first author.     

Physical Attractiveness and Psychological Adjustment Among Substance Abuse Inpatients: A Longitudinal Study1

Relations between psychological adjustment and physical attractiveness were examined longitudinally in substance abuse inpatients, controlling for the effects of length of drug abuse, length of inpatient stay, age, and socioeconomic status. Measures of adjustment and attractiveness were obtained during the first week of admission and six weeks later (within two weeks of discharge). Regression analyses indicated that initial attractiveness did not predict later adjustment, and initial adjustment did not predict later attractiveness. Partial correlation analyses revealed a positive association between attractiveness and adjustment at the first time point, but not at the later time point. These results suggest that physical attractiveness exerts only a temporary effect on judgments of adjustment in an inpatient setting. Attractiveness may affect decisions made when screening patients at mental health facilities, but may not affect decisions made over the full course of inpatient treatment.     

Perceptual and linguistic interactions in speeded classification: tests of the semantic coding hypothesis

We tested the semantic coding hypothesis, which states that cross-modal interactions observed in speeded classification tasks arise after perceptual information is recoded into an abstract format common to perceptual and linguistic systems. Using a speeded classification task, we first confirmed the presence of congruence interactions between auditory pitch and visual lightness and observed Garner-type interference with nonlinguistic (perceptual) stimuli (low-frequency and high-frequency tones, black and white squares). Subsequently, we found that modifying the visual stimuli by (a) making them lexical (related words) or (b) reducing their compactness or figural 'goodness' altered congruence effects and Garner interference. The results are consistent with the semantic coding hypothesis, but only in part, and suggest the need for additional assumptions regarding the role of perceptual organization in cross-modal dimensional interactions.     

Haptic perception of linear extent.

The perception of linear extent in haptic touch appears to be anisotropic, in that haptically perceived extents can depend on the spatial orientation and location of the object and, thus, on the direction of exploratory motion. Experiments 1 and 2 quantified how the haptic perception of linear extent depended on the type of motion (radial or tangential to the body) when subjects explored different stimulus objects (raised lines or solid blocks) varying in length and in relative spatial location. Relatively narrow, shallow, raised lines were judged to be longer, by magnitude estimation, than solid blocks. Consistent with earlier reports, stimuli explored with radial arm motions were judged to be longer than identical stimuli explored with tangential motions; this difference did not depend consistently on the lateral position of the stimulus object, the direction of movement (toward or away from the body), or the distance of the hand from the body but did depend slightly on the angular position of the shoulder. Experiment 3 showed that the radial-tangential effect could be explained by temporal differences in exploratory movements, implying that the apparent anisotropy is not intrinsic to the structure of haptic space.