Description

The Adult Nowicki–Strickland Locus of Control Scale (TANSLOCS-40) is a psychometric instrument used to assess locus of control in adults. It was developed to measure individuals’ beliefs about whether the outcomes of their actions are primarily influenced by internal factors, such as ability and effort, or by external factors, such as luck, circumstances, or other people.

The scale consists of 40 items and is designed to identify an individual’s general tendency toward a more internal or external orientation of control.

Purpose

The primary purpose of the TANSLOCS-40 is to assess individuals’ beliefs regarding the degree of control they perceive themselves to have over events and outcomes in their lives.

The instrument may be used to:

  • identify an individual’s tendency toward internal or external locus of control,
  • examine how control-related beliefs are associated with psychological well-being and behavior,
  • support the development of interventions aimed at strengthening more adaptive perceptions of personal control.

Theoretical Background

The concept of locus of control refers to the extent to which individuals believe that the outcomes they experience depend on their own actions or on forces outside their personal control.

Individuals with a more internal locus of control tend to attribute outcomes to their own effort, decisions, and abilities. In contrast, individuals with a more external locus of control tend to attribute outcomes to factors such as luck, chance, situational conditions, or the influence of other people.

This distinction can be useful in understanding differences in coping, decision-making, personal responsibility, adaptation, and psychological functioning.

Structure and Administration

The TANSLOCS-40 includes 40 self-report items addressing individuals’ perceptions of control over different situations and events in their lives.

Responses are used to estimate the participant’s general orientation toward internal or external control.

The exact scoring procedure should follow the instructions of the specific version of the instrument being administered.

Data Analysis

Data analysis may include reliability analysis, using indices such as Cronbach’s alpha, in order to examine the internal consistency of the scale.

Factor analysis may also be used to examine the structure of the instrument and identify dimensions associated with locus of control.

In addition, researchers may investigate correlations between locus of control and other psychological variables, including self-esteem, anxiety, and psychological well-being.

Psychometric Evaluation

The psychometric evaluation of the TANSLOCS-40 may include:

  • internal consistency and reliability analysis,
  • confirmatory factor analysis to examine structural validity,
  • cross-validation across different populations to assess the generalizability of findings.

These procedures are particularly important when the scale is used in new cultural, linguistic, or demographic populations.

Research and Practical Applications

The TANSLOCS-40 may be used in research focusing on personality, mental health, self-esteem, anxiety, well-being, education, and occupational behavior.

It may also be useful for examining relationships between locus of control and variables such as coping, self-regulation, decision-making, adaptation to stressful situations, and perceived personal effectiveness.

The instrument can therefore contribute to a broader understanding of how beliefs about personal control influence psychological functioning and everyday behavior.

Interpretation

Interpretation focuses on the participant’s relative tendency toward an internal or external locus of control.

A stronger internal or external orientation should not, by itself, be interpreted as evidence of psychological dysfunction. The meaning of the results depends on the context of assessment, the characteristics of the population, and the specific research or practical objective.

The TANSLOCS-40 is therefore most useful as a psychological assessment and research instrument, with results interpreted alongside other relevant information.

References

Nowicki, S., & Strickland, B. R. (1973). A locus of control scale for children. Journal of Consulting and Clinical Psychology, 40(1), 148–154.

Nowicki, S. (1976). The Nowicki-Strickland locus of control scale: A revised version for adults. Psychological Reports, 38(3), 979–981.

Lefcourt, H. M. (1976). Locus of control: Current trends in theory and research. Psychology Press.