The impact of centering first-level predictors on individual and contextual effects in multilevel data analysis

Article Abstract:

The method of separating organizational-level effects from individual-level effects and the effect of first-level centering decisions on the interpretation of second-level coefficients are discussed. The second level coefficients provide correct estimates of the individual effect and the contextual effect when the contextual predictor is included in the second-level model for the grand-mean-centered and uncentered models.

United States, Data Processing Services, Data processing and preparation, Health Industry DP Services, Analysis, Context effects (Psychology), Medical information management services

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To transform or not transform skewed data for psychometric analysis: that is the question!

Article Abstract:

Data describing 758 immigrants from the former Soviet Union who completed a Russian language version of the Symptom Checklist-90-Revised (SCL-90-R) were used to demonstrate the effects of transformation. The results suggest that data transformation is not always needed or advisable when Cronbach alpha or Pearson product-moment correlation is calculated for instruments with skewed item responses.

Immigrants, Evaluation, Data entry, Data collection

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Development and psychometric testing of the relocation self-efficiency scale

Article Abstract:

The development of relocation self-efficiency scale to evaluate the ability of adults to adjust in independent living communities is discussed.

Psychological aspects, Aged, Elderly, Self-efficacy (Psychology), Self efficacy, Clinical report

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