Retrospective and prospective studies of personality development each have their own strength and weaknesses (1, 3). However, as parental recall of the characteristics of their children when younger is so inaccurate (10), certain developmental questions require longitudinal study in order to avoid the biases inherent in the retrospective method (6).
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Rutter et al. (1964) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: