This study was conducted to determine the reliability and factorial validity of the Student Development Inventory and its seven subscales (Self-Confidence in Mathematics, Enjoyment of Mathematics, Smooth Communication, Self-Confidence with Superiors, Self-Confidence with Peers, Self-Confidence in Writing, and Enjoyment of Writing). The instrument was administered to 163 college students. The data suggest that this instrument is a reliable and convenient attitudinal inventory.
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