IAR and CDR factor scores intercorrelate too weakly to confirm the two instruments measure the same locus of control construct¶
Claim · All claims
Evidence · 1 study · associationalr1·q2
Currency · newest study 1975 · not yet checked against its sources · not reviewed by a person
Evidence quality · No study behind this claim is a peer-reviewed article with a DOI: it rests on an ERIC document (a report, conference paper or thesis). It is kept because a design page cites it; treat it as a lead to check, not an established finding.
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q2 i? Of 100 possible intercorrelations of IAR and CDR factor scores, only thirteen were significant at the .05 level, leading the author to question whether the instruments measure the same construct. → Thomas 1975
Evidence¶
Thomas 1975¶
Thomas, Mollie B. (1975). Underlying Constructs of Locus of Control of Reinforcement. https://eric.ed.gov/?id=ED108039
q2 · i? · associational · r1
Correlational analysis of factor scores from 188 ninth-graders (17% black, 83% white; 54% males, 46% females) in an Illinois junior high school. The author reports "thirteen of a possible 100 intercorrelations" significant, concluding the low correlations "question whether or not the two instruments are in fact measuring the same construct."
"As indicated in Table 5, thirteen of a possible 100 intercorrelations of the CDR and IAR factor scores were significant at the .05 level, six of which were significant at the .01 level."
Discussion¶
Related Claims¶
- Canonical analysis of IAR and CDR factor scores yields two nontrivial canonical functions (R = .644 and .463) — related
- Principal components analyses of both the IAR and CDR yield eleven components with eigenvalues of one or greater — related
- Locus of control instruments measuring domains beyond academic achievement increase the number of dimensions obtained — a broader claim this one bears on
- Intelligence test scores are significantly correlated with locus of control for both normal and delinquent adolescents — related
- Locus of control scores show no significant main effects of behavioral condition (normal vs. delinquent) or sex — related
- Baseline intercorrelations among the six tests were small, suggesting the battery covered relatively independent cognitive processes — related
- Modes of interdependence are weakly or negligibly intercorrelated across brokerage offices — related
- Intercorrelations among analyzed trait ratings show a spread of the general impression, and their size varies extremely with the rating method, from central tendencies of 0.3 to 0.9 — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
iar-cdr-factor-scores-low-intercorrelations |
title |
IAR and CDR factor scores intercorrelate too weakly to confirm the two instruments measure the same locus of control construct |
description |
IAR and CDR factor scores intercorrelate too weakly to confirm the two instruments measure the same locus of control construct |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1975 |
generated |
by process:wiki-ingest on 2026-09-26 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — thomas-1975 |
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