Digital copies of the following Technical Reports are available. Please direct inquiries to

2019-1 Occupational Plots by Occupation D.H. Schroeder, A.D. Brown

2017-1: Occupations in Education C. Condon, D.H. Schroeder

2013-1: Sex Differences in Variability D.H. Schroeder

2012-3: Four Studies of the Self-Directed Search D.H. Schroeder

2012-2: The Aptitudes of Engineering Students C. Condon, D.H. Schroeder

2012-1: Aptitudes, Vocabulary, and Educational Attainment D.H. Schroeder

2008-2: Memory for Design: Internal Characteristics and Validation Data D.H. Schroeder, C. Condon

2008-1: Is The Flynn Effect Primarily a Rise in Structural Visualization? C. Condon, D.H. Schroeder

2007-1: Analysis of Fixed Piece and Standard Administrations and Alternative Scoring Methods on the Wiggly Block Test D.H. Schroeder, C. Condon

2005-1: The Aptitudes of Attorneys S.H. Goldman, D.H. Schroeder, K. Jang

2003-1: The Aptitudes of Software Engineers R. Burke, T. Fitzgerald

1999-1: Factors Affecting Word Association Responses T. B. McAveeney

1998-1: Artistic Judgment: Review of Project and Study of Schoolchildren D.H. Schroeder, N. Bezruczko

1997-1: Long-Term Stability of 11 Aptitudes J.K. Bethscheider, D.H. Schroeder

1994-1: Annotated Bibliography of Vocabulary-Related Work Produced by the Johnson O’Connor Research Foundation M. A. Shand

1992-2: The Spelling Project K.E. Green, D.H. Schroeder

1991-1: Artistic Judgment III: Artist Validation N. Bezruczko, D.H. Schroeder

1990-6: Construction and Analysis of Semantic Properties of Alternate Form of the Personality Worksample E.M. Veccia, D.H. Schroeder

1990-5: Vocabulary Scores of Managers R.C. Gershon

1990-4: Artistic Judgment II: Construct Validation N. Bezruczko, D.H. Schroeder

1990-3: Rasch-Model Procedures Used to Build the JOCRF Vocabulary Item Bank R.C Gershon

1990-2: The Color Discrimination Project J.K. Bethscheider

1990-1: Development and Internal Structural Analysis of a New Pitch Discrimination Test E.M. Veccia, D.H. Schroeder

1989-2: Artistic Judgment Project I: Internal Structural Analyses N. Bezruczko, D.H. Schroeder

1989-1: The Aptitudes of Dentists J.K. Bethscheider

1988-5: The Measurement of Structural Visualization: An Evaluation of Spatial and Nonspatial Sources of Variation in the Wiggly Block and Paper Folding Test Scores M. Zimowski, W. Wothke

1988-4: The Perceptual Abilities Project J.K. Bethscheider

1988-2: Analysis of Cognitive Style Measures K.E. Green

1988-1: Artistic Judgment: A Review of Research N. Bezruczko

1987-1: The Numerical Facility Project J. Tal

1986-2: Aptitudes of Guidance Counselors J. Tal

1985-5: Aptitudes of Journalists, J. Tal

1985-3: Numerical Facility: A Review of the Literature J. Tal

1985-1: Cognitive Style: A Review of the Literature K.E. Green

1984-2: Intra-Person Variability in Cognitive Test Performance M. Daniel

1984-1: The Vocabulary Scores of Company Presidents R. Smith, G. Supanich

Annual Reports of the Research Department

Annual Report 2020-21 Occupational Plots for Additional Careers and for Wiggly Block; Age Curve for Tweezer Dexterity; “Broad” and “Narrow” Aptitudes vs. Personality Traits

Annual Report 2019 Occupational Plots with Aptitudes and with Interests; Examinees who are Satisfied with their Careers vs. Unsatisfied; Test Scores across Time; Age Curves for Graphoria, Number Memory, and Color Discrimination; Aging and Aspects of Openness; Aptitudes and Openness

Annual Report 2018 Occupational Plots for 27 Career Fields; Foresight and Creative Achievement; “Fit”: Aptitudes, Interests, and their Fit with College Major and Occupation; Is Use of Aptitudes Related to Job Satisfaction?

Annual Report 2017 Long-term Stability of Aptitudes; Occupations in Education; Writing Speed – Age Curve and Correlation with Ideaphoria; Test Scores Across Time; Follow-Up Studies (5 yr, 10 yr, and 1 yr); STEM-Oriented vs. People-Oriented Fields – Aptitudes and Interests

Annual Report 2016 Test Scores Across Time; Neuro-Imaging Study of Artistic Judgment; Internal Analysis of Number Memory; Follow-Up Studies (10 year); Age Curves for Analytical Reasoning and Number Facility; Structural Visualization and STEM Majors

Annual Report 2015 Aptitudes and Brain Imaging Update; Heritability; Test Scores Across Time; Experimental Inductive Reasoning Items; High School to College Study; Aptitudes of Theatre Artists; Foresight and Creative Achievement; Cognitive Scales from SAPA Personality Project; Ten Year Follow-Up Study

Annual Report 2014 Aptitudes and Brain Imaging Update; Heritability; Long-Term Stability of Aptitudes; Number of Aptitudes; Experimental Inductive Reasoning Items; Early-Career Adult Study; Creativity Project

Annual Report 2013 Long-Term Stability of Aptitudes; Experimental Inductive Reasoning Items; Heritability; Wiggly Block Administration; Study of Alumni over the Age of 65; Auditory Aptitudes Project; Theatre Artists Study; Relationship between ACT and Foundation Tests; Client Satisfaction Study

Annual Report 2012 Aptitudes and Brain Imaging; Aptitudes and Educational Attainment; Aptitudes in STEM Fields; Aptitudes of Engineering Students; Self-Directed Search; Sex Differences in Variability; Alumni Study; Experimental Inductive Reasoning Items;

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