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    Patterns of Growth in Human Intelligence
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    PNAS December 15, 1941 27 (12) 551-555; https://doi.org/10.1073/pnas.27.12.551
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    Froelich Rainey
    PNAS March 15, 1941 27 (3) 141-144; https://doi.org/10.1073/pnas.27.3.141
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    On the Mortality in Husbands and Wives
    Antonio Ciocco
    PNAS October 15, 1940 26 (10) 610-615; https://doi.org/10.1073/pnas.26.10.610
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    Simultaneous Measures of Human Relations and Emotional Activity
    Eliot D. Chapple and Charles F. Harding III
    PNAS May 15, 1940 26 (5) 319-326; https://doi.org/10.1073/pnas.26.5.319
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    The Effect of an “Emotional State” on the Initial Stages of Acquisition in a Conditioned Operant Response
    R. M. Gagné and C. H. Graham
    PNAS April 15, 1940 26 (4) 297-300; https://doi.org/10.1073/pnas.26.4.297
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    “Personality” Differences as Described by Invariant Properties of Individuals in Interaction
    Eliot D. Chapple
    PNAS January 15, 1940 26 (1) 10-16; https://doi.org/10.1073/pnas.26.1.10
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    The Cancellation, Reinforcement and Measurement of Subjective Tones
    Don Lewis and M. J. Larsen
    PNAS July 1, 1937 23 (7) 415-421; https://doi.org/10.1073/pnas.23.7.415
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    New Evidence Pertaining to Puerto Rican Prehistory
    Irving Rouse
    PNAS March 1, 1937 23 (3) 182-187; https://doi.org/10.1073/pnas.23.3.182
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    On the Nature of Aural Harmonics
    S. S. Stevens and E. B. Newman
    PNAS November 1, 1936 22 (11) 668-672; https://doi.org/10.1073/pnas.22.11.668
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    Interaction across Modalities: Simultaneous Stimulation
    Carroll C. Pratt
    PNAS September 1, 1936 22 (9) 562-566; https://doi.org/10.1073/pnas.22.9.562

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