Meaning in the Lives of Caregivers of Individuals with Parkinson's Disease

This study explores the contribution of finding meaning in general and finding meaning specific to caregiving as potentially important explanatory variables in predicting well-being in caregivers of individuals with Parkinson's disease. Fifty-eight caregivers of individuals diagnosed with Parkinson's disease were provided self-report questionnaires to assess well-being and meaning (general and specific). Results showed a significant proportion of the variance of positive affect (PASS) and negative affect (DYS) related to well-being, as assessed by the Multiple Affect Adjective Checklist – Revised. Purpose and Existential Vacuum (two subtests of the Life Attitude Profile – Revised used to assess general meaning) predicted well-being. Purpose predicted 41.8% of the variance related to PASS; Existential Vacuum predicted 30.8% of the variance related to DYS. Meaning related specifically to caregiving (Finding Meaning Through Caregiving Scale) did not explain any additional variance. Our results suggest that finding meaning, beyond meaning specifically associated with caregiving, is the key to understanding well-being among caregivers of individuals with Parkinson's disease. The positive construct of finding meaning in general can empower researchers and professionals working with caregivers to better understand the variability in caregiver outcomes as well as assess and intervene more effectively.     

Overconfidence in Probability and Frequency Judgments: A Critical Examination

The overconfidence observed in calibration studies has recently been questioned on both psychological and methodological grounds. In the first part of the article we discuss these issues and argue that overconfidence cannot be explained as a selection bias, and that it is not eliminated by random sampling of questions. In the second part of the article, we compare probability judgments for single events with judgments of relative frequency. Subjects received a target individual's personality profile and then predicted the target's responses to a series of binary questions. One group predicted the responses of an individual target, while a second group estimated the relative frequency of responses among all target subjects who shared a given personality profile. Judgments of confidence and estimates of relative frequency were practically indistinguishable; both exhibited substantial overconfidence and were highly correlated with independent judgments of representativeness.     

Two to tango: effects of collaboration and disagreement on dyadic judgment

Four studies examined dyadic collaboration on quantitative estimation tasks. In accord with the tenets of "na?ve realism," dyad members failed to give due weight to a partner's estimates, especially those greatly divergent from their own. The requirement to reach joint estimates through discussion increased accuracy more than reaching agreement through a mere exchange of numerical "bids." However, even the latter procedure increased accuracy, relative to that of individual estimates (Study 1). Accuracy feedback neither increased weight given to partner's subsequent estimates nor produced improved accuracy (Study 2). Long-term dance partners, who shared a positive estimation bias, failed to improve accuracy when estimating their performance scores (Study 3). Having dyad members ask questions about the bases of partner's estimates produced greater yielding and accuracy increases than having them explain their own estimates (Study 4). The latter two studies provided additional direct and indirect evidence for the role of na?ve realism.