Analysis

The Rigidity Scale [RI-39] is a psychometric instrument concerned with the assessment of personality rigidity, that is, the tendency to maintain fixed patterns of thought, attitudes, and behavior even when circumstances may require adaptation or change. The bibliography included in the source specifically refers to Rehfisch’s work on a personality rigidity scale, placing the RI-39 primarily within the field of psychological personality assessment.

The source text discusses rigidity more broadly across engineering, medicine, and psychology. However, in the context of the RI-39, the most relevant dimension is psychological rigidity, referring to difficulty modifying established ways of thinking or behaving.

Psychological rigidity may be expressed through persistent reliance on familiar solutions, difficulty accepting alternative viewpoints, limited flexibility when presented with new information, and resistance to changing established behavioral patterns.

Purpose

The main purpose of the RI-39 is to provide a quantitative assessment of personality and behavioral rigidity, allowing researchers to examine the extent to which an individual demonstrates greater or lesser cognitive and behavioral flexibility.

The source material more broadly describes rigidity measurement as a means of evaluating a person or system, monitoring change over time, and comparing different samples or populations.

Within psychological research, the results may be used to explore relationships between rigidity and personality traits, social or political attitudes, adaptability, and other individual differences.

Main Dimension of Assessment

The scale can be understood as assessing a continuum ranging from cognitive and behavioral flexibility to high rigidity.

Lower levels of rigidity may be associated with greater adaptability, easier modification of attitudes, and greater openness to new information or alternative approaches to problem solving.

Higher levels of rigidity may reflect stronger adherence to established beliefs, difficulty changing behavioral patterns, and reduced adaptation when situational demands change. The source similarly describes psychological rigidity as ranging from flexibility in thinking and behavior to persistence and difficulty adapting.

Scoring

The designation RI-39 indicates a 39-item form. However, the available source does not provide detailed information concerning the response format, total score range, reverse-scored items, or specific interpretive cut-off values.

Accordingly, scoring should follow the official instructions associated with the specific version being administered. In general, higher scores would be expected to reflect greater personality or behavioral rigidity, whereas lower scores would indicate greater flexibility.

Data Analysis and Use

RI-39 scores may be used to generate an overall indicator of rigidity and to compare individuals or groups.

In research applications, descriptive statistics, correlations, and group comparisons may be used depending on the research questions. Particular interest may lie in examining relationships between rigidity and variables such as personality, adaptability, social and political attitudes, and responses to change.

Item-level analysis may also help identify specific patterns of thought or behavior characterized by greater rigidity.

Psychometric Evaluation

When the RI-39 is used in a new population, the reliability and validity of the specific version should be examined.

Internal consistency may be evaluated using appropriate reliability coefficients, while structural validity may be investigated using factor-analytic methods. Convergent and discriminant validity may also be assessed through relationships with other measures of personality, attitudes, or psychological flexibility.

Applications

The RI-39 may be used in personality research, social psychology, and the study of individual differences.

It may also be applied to investigate relationships between rigidity and social or political attitudes, particularly since one of the references included in the source concerns the measurement of political attitudes.

Scores should not be interpreted as stand-alone clinical or diagnostic indicators. Interpretation is best conducted in conjunction with other psychometric information and the characteristics of the population in which the instrument is administered.

References

Rehfisch, J. M. (1958). A scale for personality rigidity. Journal of Consulting Psychology, 22(1), 11–15.

Rehfisch, J. M. (1958). Some scale and test correlates of a personality rigidity scale. Journal of Consulting Psychology, 22(5), 372–374.

Robinson, J. P., & Shaver, P. R. (1969). Measures of Political Attitudes. Institute for Social Research, University of Michigan, Ann Arbor, Michigan.