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41.
KOJI UENO MATHEW D. GAYMAN ERIC R. WRIGHT STEVEN D. QUANTZ 《Personal Relationships》2009,16(4):659-670
Abstract The existing literature on gay, lesbian, and bisexual (GLB) youth emphasizes unique benefits of having GLB friends, but empirical studies have shown no or only small mental health advantages of having them. To unravel this contradiction, this study tested a common assumption that GLB youth develop better relational quality with their GLB friends than with straight friends. Statistical analysis used interview data from community organization participants in Indianapolis, Indiana, USA (n = 84) and employed analysis of variance and ordinary least squares regression models. GLB youth's friendships with GLB and straight peers did not differ in contact frequency, emotional closeness, and hassles. Further, GLB and straight friends were similar in the degree to which each relational quality dimension was associated with mental health. 相似文献
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MEASUREMENT ERROR IN RESEARCH ON HUMAN RESOURCES and FIRM PERFORMANCE: HOW MUCH ERROR IS THERE AND HOW DOES IT INFLUENCE EFFECT SIZE ESTIMATES? 总被引:8,自引:1,他引:7
BARRY GERHART PATRICK M. WRIGHT GARY C. MC MAHAN SCOTT A. SNELL 《Personnel Psychology》2000,53(4):803-834
Studies of the relationship between human resource (HR) practices and firm performance typically use a single respondent to assess firm level HR practices or HR effectiveness. However, previous research in other substantive areas suggests that rater differences are a potentially important source of measurement error. We demonstrate analytically the potential consequences of both random and systematic measurement error in research on HR and firm performance. However, our main focus is on random error and we show how generalizability theory can be applied to obtain better estimates of reliability by simultaneously recognizing multiple sources (e.g., items, raters) of random measurement error. These more inclusive reliability estimates, in turn, offer the possibility of more precisely quantifying substantive relationships in the HR and firm performance literature. In our sample, reliabilities (as estimated by generalizability coefficients) for single-rater assessments of HR variables were generally below .50. This degree of measurement error, if present in substantive studies on HR and firm performance, could lead to considerable bias, given that an unstandardized regression coefficient is corrected for measurement error in the independent variable by dividing by its reliability coefficient (not its square root). We also found only limited convergent validity between HR and line managers ratings of a second type of HR measure, HR effectiveness. In general, our findings suggest that future researchers need to devote greater attention to measurement error and construct validity issues. Our study provides an example of how generalizability theory can be useful in this pursuit. 相似文献
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Abstract.— Subjects learned a pictorial material in anticipation of either free recall (FR), serial recall (SR), or recognition tests. A design containing all possible combinations of anticipated test and test actually given was used. SR and recognition performance was best when subjects anticipated these tests, respectively, whereas FR performance was best when an SR test was anticipated. Anticipation of recognition tended to interfere with SR performance, and vice versa. The results indicate that subjects encode pictorial material differently in anticipation of different retention tests; that this serves to facilitate or to impair performance on the anticipated and/or other retention tests in a predictable manner; and that subjects tend to use different information from the stimuli to pass recognition tests and to pass recall (FR or SR) tests. 相似文献
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Abstract.— Two experiments examined the effects of encoding variability on the free recall of pictures. In Expt. I, drawn objects were presented 3 times in different pictorial contexts (RV) or in the same contexts (RR). In Expt. II, repeated stimuli were 3 different specimens of the same object category (VR) or the same object presented 3 times (RR). Spacing of repetitions was varied from zero to 15, and a mixed-list design was used. Both RV and VR items tended to be recalled better than and prior to RR items. Recall of RR and of VR items increased with increasing spacing, but recall of RV items showed no spacing effect. In a second recall test, preceded by 4 min of "thinking about" the pictures, the only remaining effect of spacing or of context variation was a low recall of massed RR items. VR items were still recalled better than and prior to RR items. It is suggested that spacing, and variation of the external context of pictures, facilitate retrieval when the time and effort spent on recall is limited, by increasing the numberlvariety of potential recall cues stored together with item information. 相似文献
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SUMMARY OF RESEARCH ON THE SELECTION INTERVIEW SINCE 1964 总被引:1,自引:0,他引:1