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PEP-Web Tip of the Day

To start PEP-Easy without first opening your browser–just as you would start a mobile app, you can save a shortcut to your home screen.

First, in Chrome or Safari, depending on your platform, open PEP-Easy from pepeasy.pep-web.org. You want to be on the default start screen, so you have a clean workspace.

Then, depending on your mobile device…follow the instructions below:

On IOS:

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  3. In the “Add to Home” confirmation “bubble”, tap “Add”

On Android:

  1. Tap on the Chrome menu (Vertical Ellipses)
  2. Select “Add to Home Screen” from the menu

 

For the complete list of tips, see PEP-Web Tips on the PEP-Web support page.

Hartmann, H. (1946). Psychiatrische Untersuchungen an Einer Serie Von Zwillingen. (Psychiatric Research on a Series of Twins.): By Erik Essen-Moeller. Copenhagen: Ejnar Munksgaard, 1941. 200 pp.. Psychoanal Q., 15:380-381.
    

(1946). Psychoanalytic Quarterly, 15:380-381

Psychiatrische Untersuchungen an Einer Serie Von Zwillingen. (Psychiatric Research on a Series of Twins.): By Erik Essen-Moeller. Copenhagen: Ejnar Munksgaard, 1941. 200 pp.

Review by:
H. Hartmann

The material on which this study is based comprises sixty-nine pairs of twins of the same sex. It forms a complete series in the sense that of a group of ten thousand patients all the twins of the same sex about whom data could be gathered and whose partners reached adulthood were included. This completeness gives the results of the investigation greater conclusiveness than if a selection of striking similarities among twins, or of otherwise 'interesting' case material had been made. Forty-eight pairs were probably dizygotic, and twenty-one pairs probably monozygotic. The case histories of the monozygotic pairs are presented in greater detail, while the others are briefly described, and only occasionally used to elucidate certain points by way of comparison.

The study of twins has been of interest in psychiatry to determine the relative importance of heredity and environment; it can also contribute towards a better insight into whether an anlage is dominant or recessive. Also, it may be helpful to clarify nosological questions. The author predominantly utilizes this third approach. He attempts to find out to what extent seemingly different syndromes and symptoms may be the manifestation of the same anlage.

Limiting this discussion of the author's results to one group of cases, of seven schizophrenic twins none of the partners had a markedly schizophrenic psychosis, and only one can be considered bordering on a schizophrenic psychosis. However, four of the partners had psychoses of another type: depressions ending in recovery without demonstrable defect.

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