Birthdate psychology: a new look at some old data. 1975

R J Pellegrini

This brief note deals with the development of alternative perspectives on the provocative, and as yet unexplained result of an earlier study in which groups of people born under different astrological zodiac signs were found to differ markedly in their scores on the California Psychological Inventory (CPI) scale described as a measure of "Femininity." Attention is focused on (a) discrepancies between the observed pattern of high and low scores on the CPI Femininity scale, and classification of sun signs as "masculine" or "feminine" by astrologers; (b) the trend in the data indicating that the six sun sign categories for which the highest scores were obtained on the Femininity scale correspond to birthdates running continuously from July 24 to January 20, while the six sun sign categories for which the lowest scores were obtained on that scale correspond to birthdates running continuously from January 21 to July 23; and (c) speculative consideration of the kinds of climatic, dietary, and/or cyclical geomagnetic events that might affect reproduction and prenatal and/or neonatal development in such a way as to influence adult personality.

UI MeSH Term Description Entries
D008297 Male Males
D010551 Personality Behavior-response patterns that characterize the individual. Personalities
D011581 Psychological Tests Standardized tests designed to measure abilities (as in intelligence, aptitude, and achievement tests) or to evaluate personality traits. Parenting Stress Index,Trier Social Stress Test,Trier Stress Test,Psychologic Tests,Psychological Test,Test, Psychological,Tests, Psychological,Index, Parenting Stress,Psychologic Test,Stress Index, Parenting,Stress Test, Trier,Test, Psychologic,Test, Trier Stress,Trier Stress Tests
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001255 Astrology System of thought regarding forecasting of earthly and human events through the observation and interpretation of the fixed stars and planetary bodies.
D012380 Role The expected and characteristic pattern of behavior exhibited by an individual as a member of a particular social group. Role Concept,Concept, Role,Concepts, Role,Role Concepts,Roles
D012621 Seasons Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Seasonal Variation,Season,Seasonal Variations,Variation, Seasonal,Variations, Seasonal
D012723 Sex The totality of characteristics of reproductive structure, functions, PHENOTYPE, and GENOTYPE, differentiating the MALE from the FEMALE organism. Genotypic Sex,Phenotypic Sex,Sex, Genotypic,Sex, Phenotypic

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