Researchers, theorists, and practitioners have expressed a renewed interest in the longitudinal dynamics of personality characteristics in adulthood, including organic life span trajectories and their amenability to volitional change. However, this research has apparently not yet expanded to include the Dark Triad (psychopathy, narcissism,…

Validation of data collection instruments is a necessary step in all research and should be regarded as an integral component in every stage of the research process; however, the validation process is often not accounted for in detail in published studies. The purpose of this paper is to describe the development and validation of the Ungspråk…

This report introduces the "WorkFORCE"™ Assessment for Job Fit, a personality assessment utilizing the "FACETS"™ core capability, which is based on innovations in forced-choice assessment and computer adaptive testing. The instrument is derived from the fivefactor model (FFM) of personality and encompasses a broad spectrum of…

In exploratory or unrestricted factor analysis, all factor loadings are free to be estimated. In oblique solutions, the correlations between common factors are free to be estimated as well. The purpose of this article is to show how likelihood-based confidence intervals can be obtained for rotated factor loadings and factor correlations, by…

In this chapter, the author examines the adequacy and appropriateness of self-report data using the lens of construct validity (Kane, 2006; Messick, 1989). Because construct validity focuses on the appropriateness of data for specific uses or interpretations, he limits his discussion to the use of self-report data in scholarly research. Other…

Delay discounting is the decline in the present value of a reward with delay to its receipt. Across a variety of species, populations, and reward types, value declines hyperbolically with delay. Value declines steeply with shorter delays, but more shallowly with longer delays. Quantitative modeling provides precise measures to characterize the…

Although researchers have succeeded in identifying knowledge and skills and personal traits and characteristics of effective leaders, they have not been nearly as successful in identifying or defining those elusive leadership qualities that fall into the affective domain--what the National Council for the Accreditation of Teacher Education (NCATE)…

The personality trait of neuroticism refers to relatively stable tendencies to respond with negative emotions to threat, frustration, or loss. Individuals in the population vary markedly on this trait, ranging from frequent and intense emotional reactions to minor challenges to little emotional reaction even in the face of significant…

Scores of colleges and universities have pledged to promote lifelong learning in their most central document, the mission statement. Moreover, "A Test of Leadership: Charting the Future of Higher Education," the report from the Secretary of Education's Commission on the Future of Higher Education (2006), stresses the importance of lifelong…

This article describes a 2-session laboratory project in which students develop, conduct, and attempt to validate an interview-based personality assessment. In Session 1, students learn about effective interview procedures and then design and pilot-test an interview to assess 4 personality traits (emotionality, activity level, sociability, and…

This technical manual discusses some of the recent developments in the science of graphology and their implications for the science. The manual contains the following sections: (1) Graphology: An Introduction; (2) "CHAPS": Computerized Handwriting Analysis Profiling Systems; (3) HRC Profiles; (4) Reliability; (5) Validity; (6) Historical…

Single constructs measured using positively and negatively worded items are often incompatible with a congeneric model, but require 2 correlated factors. Imperfect correlation entails that 2 independent dimensions are required for representing the true variance. If 2 dimensions are sought, how can they be interpreted? This study shows how to…

We introduce a personality inventory designed to measure six major dimensions of personality derived from lexical studies of personality structure. The HEXACO Personality Inventory (HEXACO-PI) consists of 24 facet-level personality trait scales that define the six personality factors named Honesty-Humility (H), Emotionality (E), Extraversion (X),…

This paper describes the Myers-Briggs Type Indicator (MBTI), developed by I. Myers and K. Briggs (1940s) to assess personality type. Based on Jungian theory, the MBTI has become a tool for identifying the 16 different patterns of action into which every person fits. The 16 personality types are based on patterns of: (1) extraversion-introversion;…

Identification of strengths is considered an important part of school psychological practice. However, few instruments are available to school psychologists that allow for systematic and comprehensive evaluation of a student's emotional and behavioral strengths. School psychologists must be provided with psychometrically sound instruments that…