By Adegunle, Felix Omotayo
The study was carried out to determine the effect of suggestopedia instructional technique on academic achievement, interest and retention of metal work students of technical colleges. Six research questions were answered while nine null hypotheses formulated were tested at 0.05 level of significance. The study adopted quasi experimental design and was carried out in Lagos State. The population for the study was 410 male and female students. The sample size for the study was 114 metalwork second year students which comprised 72 males and 42 females randomly selected from two technical colleges. The instruments for data collection were metalwork cognitive achievement test and metalwork interest inventory. To ensure content validity of the metalwork cognitive achievement test (MWCAT), a test blue print (Table of Specifications) was built for the test. The, MWCAT, metalwork technology interest inventory, suggestopedia instructional technique, metalwork technology lesson plan and the training plans for metalwork technology teachers and students were subjected to face validation by three experts. The MWCAT was trial tested for the purpose of determining the psychometric indices of the test. A total of 40 items of the MWCAT had good difficulty, discrimination and distractor indices. In addition to face -validation, the metalwork interest inventory was also subjected to construct validation using factor analysis.