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Alpert, A. Neubauer, P.B. Weil, A.P. (1956). Unusual Variations in Drive Endowment. Psychoanal. St. Child, 11:125-163.

(1956). Psychoanalytic Study of the Child, 11:125-163

Unusual Variations in Drive Endowment

Augusta Alpert, Ph.D., Peter B. Neubauer, M.D. and Annemarie P. Weil, M.D.


our work with young children has increasingly led us to a study of their endowment. We have become more and more impressed with the fact that children show manifestations of unusual drive equipment. This study is focused on the role of such unusual variations in the development of three children.

The cases selected show the following variations in drive endowment:

1. CARL —hyperlibidinal and hypoaggressive drive energies.

2. TONY —hyperaggressive and adequate libidinal drive energies.

3. SANDRA—hypolibidinal and hypoaggressive drive energies.

These are three separate studies, carried out by the three authors and are presented as an initial report.

The clinical material led us to study drive endowment from the following viewpoints:

1. Quantity of drive energy;

2. Balance of drive energy;

3. Distribution of drive energy;

4. The study of drive endowment stimulated our investigation of its effect on ego development, as seen in the interaction with the environment.

In our concluding remarks, we shall indicate common principles.


Augusta Alpert, Ph.D.


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