Description

The Duttweiler Internal Control Index [DICI-56] is a psychometric tool designed to measure attitudes and beliefs related to internal control. The scale includes 56 questions that assess the extent to which a person believes they have control over events and situations in their life, as opposed to relying on external factors.

Data Analysis and Use

The analysis of data from the DICI involves the following processes:
Descriptive Statistics:Means and Standard Deviations: Calculation of means and standard deviations for responses to each question or for the subscales of the index.
Reliability: Assessment of the internal consistency of the scale using Cronbach’s alpha to ensure the reliability of the results.
Correlations:Examination of correlations between responses to different questions or subscales to understand the relationships between different aspects of internal control.
Factor Analysis:Use of factor analyses to identify key factors contributing to perceptions of internal control, if deemed necessary.

Objective

The primary objective of the DICI is to provide a reliable tool for assessing perceptions of internal control. It is used for:
Research Purposes: Studying the relationship between internal control and other psychological or social variables, as well as its impact on personal and professional behaviors.
Clinical Assessment: Evaluating the level of internal control and the need for interventions or support.
Policy and Strategy: Developing strategies that consider perceptions of internal control to enhance self-efficacy and effectiveness.

Calibration

Calibration of the DICI involves:
Internal Consistency Assessment: Calculation of the tool’s reliability using Cronbach’s alpha to ensure consistency in responses.
Comparative Analysis: Comparing the results with data from other related studies to confirm the validity and reliability of the tool.

Bibliography

Duttweiler, P. (1984). The Internal Control Index: A measure of locus of control. Educational and Psychological Measurement, 44(2), 407-412.
Rotter, J. B. (1966). Generalized expectancies for internal versus external control of reinforcement. Psychological Monographs: General and Applied, 80(1), 1-28.
Beck, A. T., & Weisman, A. G. (1984). Assessment of the internal control index and its relationship with other measures of cognitive functioning. Journal of Clinical Psychology, 40(5), 1041-1050.