The relationship between daily stress and health: Replicating and extending previous findings

Abstract

The present study was an attempt to investigate the impact of daily stress, or hassles, on the physical and psychological health status of 112 adolescents over 10 consecutive days. Measures of hassles, daily somatic symptoms and mood, overall health status, and perceived social support were taken. A principal components analysis of the newly designed Secondary School Students' Hassles Scale generated four factors of which “management of time and work” accounted for 41 percent of the variance. Results supported previous findings that hassles levels were related inversely to daily health, daily mood, and overall health status. Perceived social support was found to be associated with general health but not with daily health and mood, and results from partial correlation analyses challenged the buffering role of social support between hassles and adaptational outcomes. The cross-cultural applicability of the hassles concept was discussed.     

Kanizsa's shrinkage illusion produced by a misapplied 3-D corrective mechanism

In order to include the monocular areas from the left and the right eye in the cyclopean view, the visual system displaces the occluded elements which would result in a horizontal elongation of the shape but does not occur thanks to a correction mechanism which preserves the shape. We hypothesised that this mechanism causes Kanizsa's amodal shrinkage illusion (the apparent elongation of a partially occluded square) when it is incorrectly applied by the visual system to a two-dimensional stimulus. Four experiments tested this hypothesis: (i) one-eyed observers were less susceptible to the illusion than people with normal binocular vision because, for them, the correction for shape is unnecessary; (ii) the illusion was stronger with binocular than with monocular vision since binocularity induces the visual system to correct for the shape distortion; (iii) the illusion diminished when the stimulus was rotated 90 degrees given that displacement and compression are not required for vertical occlusion; (iv) the magnitude of the illusion was a function of the width of the occluder because, as previous research has shown, the edges of a partially occluded square are less displaced the farther they are from the edges of the occluder. The data from the four experiments support our hypothesis even though no condition was able to eliminate the illusion; other possible causes are discussed.     

Changes in achievement goals and competence perceptions across the college semester

We investigated the relationship between changes in perceptions of competence and changes in achievement goals across a college semester for students enrolled in an introductory psychology course. Two types of competence perceptions were examined: self-efficacy for learning and normative perceived ability. Changes in normative perceived ability were predicted to relate to changes in performance goals, but not mastery goals. Because mastery goals rely on self-referent standards to evaluate ability, we predicted changes in self-efficacy for learning would relate to changes in mastery goals. We also expected changes in self-efficacy for learning to relate to changes in performance goals because learning can lead to the demonstration of superior competence. The predictions were supported for mastery and performance-approach goals, but not for performance-avoidance goals. Very little change in performance-avoidance goals was observed. Scores on the first course exam also predicted change in performance-approach goals, with this effect partially mediated by competence perceptions.     

Comparing the self-concepts of Hong Kong Chinese adults with visible and not visible physical disability

In the present study, the authors evaluated the self-concept levels of Hong Kong Chinese adults with visible and not visible physical disabilities. Fifty-five Hong Kong Chinese (22 men and 33 women) aged 18 to 55 (M = 39.50, SD = 10.21) participated-20 without physical disabilities (control group), 20 with visible physical disabilities, and 15 with physical disabilities that were not visible. All the participants responded to the Self-Concept Questionnaire for Hong Kong Chinese With Physical Disabilities (SCQPD; S. F. Tam & D. Watkins, 1997). The group with visible disabilities scored significantly lower in self-concept than did the control group and the group with disabilities that were not visible. There were also significant differences between specific facets of self-concept for people with visible and not visible disabilities. It was interesting to find that there was no significant difference in self-concept levels between the not visible group and the control group. The implications for rehabilitation and social services for these various groups are discussed.     

Understanding response patterns in dyadic conflict: An interactive approach combining self‐construal and opponent's dominance‐submissiveness

Previous works on the effect of self‐construal in interpersonal behaviours tend to adopt a main effect approach. The present research proposes an interactive approach in understanding two response patterns in dyadic conflict by combining self‐construal and the stance of the opponent. Independent self‐construal was hypothesised to be associated with a self‐centred pattern of conflict response, which is characterised by taking contending responses regardless of whether the stance of the opponent is dominant or submissive. Relational self‐construal was hypothesised to be associated with a tuning‐in pattern of conflict response, which is characterised by showing contending responses when the opponent is submissive but yielding responses when the opponent is dominant. With trait self‐construal measured and opponent's stance manipulated, Study 1 provided initial support for the hypotheses. Study 2 showed a three‐way interaction effect between trait self‐construal, manipulated self‐construal and the opponent's stance on actual conflict responses during discussion of a scenario. The effect of self‐construal manipulation was only observed among people who were low in trait independent self‐construal and average in trait relational self‐construal. The results pinpoint the importance of considering personal and opponent factors simultaneously in understanding the dynamics of dyadic conflict processes.     

Mommy, speak clearly: induced hearing loss shapes vowel hyperarticulation

Talkers hyperarticulate vowels when communicating with listeners that require increased speech intelligibility. Vowel hyperarticulation is said to be motivated by knowledge of the listener's linguistic needs because it typically occurs in speech to infants, foreigners and hearing-impaired listeners, but not to non-verbal pets. However, the degree to which vowel hyperarticulation is determined by feedback from the listener is surprisingly less well understood. This study examines whether mothers' speech input is driven by knowledge of the infant's linguistic competence, or by the infant's feedback cues. Specifically, we manipulated (i) mothers' knowledge of whether they believed their infants could hear them or not, and (ii) the audibility of the speech signal available to the infant (full or partial audibility, or inaudible). Remarkably, vowel hyperarticulation was completely unaffected by mothers' knowledge; instead, there was a reduction in the degree of hyperarticulation such that vowels were hyperarticulated to the greatest extent in the full audibility condition, there was reduced hyperarticulation in the partially audible condition, and no hyperarticulation in the inaudible condition. Thus, while it might be considered adaptive to hyperarticulate speech to the hearing-impaired adult or infant, when these two factors (infant and hearing difficulty) are coupled, vowel hyperarticulation is sacrificed. Our results imply that infant feedback drives talker behavior and raise implications for intervention strategies used with carers of hearing-impaired infants.     

Using an online viewing system for Parent-Child Interaction therapy consulting with professionals

Parent-Child Interaction Therapy (PCIT) training was provided to therapists working with parents of children with disruptive behavior problems. Therapists uploaded video-recordings of selected sessions using a web-based tool for video sharing and review, the Video Analysis Tool (VAT). Trainers utilized the VAT for consultation to improve treatment fidelity. Clinical practice benefits include the ability to provide targeted, specific feedback to the trainees soon after a session and to disseminate PCIT to a larger, global audience.