This study was designed to analyze data available at Wartburg College with respect to the effects of family variables upon MMPI scores with the purpose of suggesting hypotheses which may be tested in future investigations. The subjects were Wartburg College freshmen entering in the fall of the school years 1963 and 1964. A 5% coefficient of risk was adopted. AxB factorial designs were employed in the analysis of the data. No significant results were obtained for the female subjects on any of the MMPI scales. Four hypotheses were indicated: (a) Males from large families tend to be more introverted than males from small families; (b) males from large families show more of a tendency toward depression than males from small families; (c) in small families, males having only brothers· are generally less culturally and aesthetically inclined than those having sisters; (d) oldest males having only brothers seem to conform better socially and to have less difficulty with interpersonal relationships than other males.
Proceedings of the Iowa Academy of Science
©1965 Iowa Academy of Science, Inc.
Kruger, Brian and Fruehling, W.G.
"The Effect of Family Size, Sex of Siblings and Ordinal Position on Personality Characteristics,"
Proceedings of the Iowa Academy of Science, 72(1), 357-366.
Available at: https://scholarworks.uni.edu/pias/vol72/iss1/52