BRAIN EVOKED-POTENTIALS AND INTELLIGENCE - THE HENDRICKSON PARADIGM

An attempt to replicate the Hendrickson (Hendrickson & Hendrickson, 1980, 1982) paradigm and results was undertaken on 40 subjects. The Hendrickson ''rules for replication were also empirically examined with regard to their basis in fact rather than presumption. In addition to computing the specific Hendrickson measures of string, variability, and composite, averaged evoked potential integrated waveform amplitude and component latencies were computed. Results indicated a replication of the variability parameter and possibly component latency relationships only. The string correlations were significantly reversed in direction. The composite measure was conceptually and statistically nonsignificant. The Hendrickson paradigm was viewed as no more than a well-controlled auditory evoked potential paradigm. The nine rules suggested by Hendrickson and Hendrickson were shown to be largely irrelevant to obtaining evoked potential correlates with IQ.