Twins : a study of heredity and environment / by Horatio H. Newman, Frank N. Freeman, Karl J. Holzinger.

  • Horatio Hackett Newman
Date:
[1937]
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Twins : a study of heredity and environment / by Horatio H. Newman, Frank N. Freeman, Karl J. Holzinger. Source: Wellcome Collection.

    11/398 (page VII)
    TABLE OF CONTENTS PAGE List of Illustrations ix List of Tables xiii PART I. INTRODUCTION AND BIOLOGICAL ASPECTS CHAPTER I. Previous Studies of the Problem 3 IL A Critique of Methods and the Problem and Method of the Present Study 23 III. The Two Kinds of Twins and the Methods of Diagnosing Them 32 IV. Causes of Differences in Identical Twins Reared Together . 36 PART II. COMPARISON OF FIFTY PAIRS OF IDENTICAL AND FIFTY PAIRS OF FRATERNAL TWINS V. Comparison of the Differences of the Two Groups .... 55 VI. Statistical Analysis of Unseparated Twins 94 VII. Resemblance in Handwriting of Identical and Fraternal Twins Reared Together 122 PART III. STUDY OF NINETEEN PAIRS OF IDENTICAL TWINS SEPARATED IN INFANCY VIII. Gathering the Separated Cases; Proofs of Monozygocity and Degree of Separation 132 IX. Human-Interest Stories as Told by Twins 147 X. Case Studies 154 XI. Summary of the Findings in the Case Studies 325 XII. Statistical Analyses of Separated Twins 335 XIII. General Summary and Interpretation 350 Index 365 vii