The items of the Interpersonal Checklist (ICL)
were scaled to a circular model by two different
procedures: (1) the items were sorted by two different
samples into categories corresponding to the labels
of the eight ICL octants and (2) each item was
scaled twice by a third sample, first on the 9-point
bipolar scale Hate-Love, and second on the 9-point
bipolar scale Dominance-Submissiveness. The two
sets of ratings were found to correlate -.09, indicating
that the two postulated dimensions presumed to
underly the circular order are orthogonal. The
items were then plotted into the plane formed by
using the two scales as axes. The circular scale
values calculated for the two sorting procedures
correlated .95. The scale values obtained from the
sorting procedure and those from the two-dimensional
procedure correlated .89. In general, the
plotted items followed a circular order from close
synonymity to antonymity and back. Several gaps
on the circle were found, indicating an inadequate
sampling of items. Scale values were calculated for
each of the eight ICL scales using the circular scale
values as item weights. When these values were
plotted and compared with a factor plot of the
eight ICL scales, the plots were remarkably similar.
Many items were found to be displaced by the scaling
procedures from the placements given by the
authors of the ICL. Most of these displacements
were found to be related to an intensity dimension
postulated by the authors of the ICL. In general,
the mild/moderate items were scaled toward the
Love and Dominance poles, and the strong/extreme
items were scaled toward the Hate and Submissive poles, thus pulling the items away from the scales
they were intended to represent. Some of the major
implications of the use of these procedures in the
construction of personality instruments are discussed.
McCormick, Clarence C & Kavanagh, Jack A. (1981). Scaling Interpersonal Checklist items to a circular model. Applied Psychological Measurement, 5, 421-447. doi:10.1177/014662168100500401
McCormick, Clarence C.; Kavanagh, Jack A..
Scaling Interpersonal Checklist items to a circular model.
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