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Published online by Cambridge University Press: 01 February 2011
In a 1992 issue of the International Journal of Engineering Education, this author reported on the effects of laboratory group size on student performance. Most of the information was obtained from a material science laboratory. The data indicate that individuals in groups of two or four students tended to receive better final course grades than those from groups of three. Discussion was given concerning the possible reasons for this finding along with information from the then current literature. This paper includes the key components of the 1992 paper and updates it with data obtained since then. It also includes information from other literature published in the recent past. The conclusions reached in the 1992 paper appear to remain valid.