The Portable Rod-and-Frame Test (PRFT) was developed by Oltman (1968) to measure field dependence-independence in a lighted room. Oltman suggested that the lighted room would be more
appropriate for use with children than measures that require a darkened room. Reliability data on
the use of the PRFT with school children are scant. Dreyer, Dreyer, and Neblekopf (1971) reported a
test-retest reliability (one-month interval between testings) on 46 kindergarten children as .96. It appears
that there are no other reliability data on the Oltman PRFT when used with school children
(Cox & Witkin, 1978). The purpose of this study was to assess reliability of the PRFT with school-age
children and to examine grade and sex differences.
De Lisi, Richard & Smith, Jeffrey K. (1979). The reliability of Oltman's rod-and-frame test with grade-school children. Applied Psychological Measurement, 3, 413-414. doi:10.1177/014662167900300312
De Lisi, Richard; Smith, Jeffrey K..
The reliability of Oltman's rod-and-frame test with grade-school children.
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