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In invesu'gating the eommanieation competencies needed in the workplace by automo~hce meelumies apprentices in their final years and tradespersons (first year), an attempt was made to determine the comparative effectiveness of three occupational analysis techniques: DACUM (involving supervisors); 0~ ; and ~d l~,nmtion ,f~rck (Information Search used to develop a draft list of competencies, to which were added additional competencies suggested by auto mechanics, teachers of auto mechanics, and teachers of communications). With respect to the Phase 2 (list of competeneies after Hermarm, 1987) data, the Extended Information Search was found to produce a comprehensive valid list. The DACUM method produced comprehensive data, but diffwulty was experienced in obtaining suffwient participants to undertake this method. The Observation method took about the same time and produced the least comprehensive data. For Phase 3 (data on each competency), the completion (in class and via mailing) of the competencies inventory was the most effective technique, due to the large and mare representative sample.

In investigating the competencies needed by secondary school teachers, the comparative effectiveness of three occupational (job) analysis techniques was examined: Critical Incident, DACUM, and Information Search. The study was designed to compare these three techniques on their effectiveness in generating Phase 2 data (list of competencies, after Herman, 1987). This involved controlling for researcher time allocated to each technique, having the same category of respondents for each technique, and devising a 'validated" inventory of competencies against which the OA techniques can be compared. Using

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