In the current study, a person-centered approach was taken to the examination of the relation between leader effectiveness and personality preferences. Type Theory and Adaption-Innovation Theory precepts were examined in tandem using cluster analytic techniques in order to discover whether past variable-centered findings relating these two theories would generalize to a person-centered examination. Eight patterns were hypothesized to emerge from the cluster analysis based on past correlational research, and three of these patterns were present in the seven-cluster solution. Leader effectiveness was measured in terms of multisource ratings on Benchmarks™. Hypotheses were proposed based on past variable-centered research examining the relations between Jungian personality types and self, superior, peer, and subordinate ratings of leader effectiveness. Some support was found for the variable-centered predictions, but the pattern-focused approach provided insight into the dynamics of the five personality preferences examined as well as suggested that indicators other than what would be predicted based on variable-centered studies may contribute to perceptions of leader effectiveness. Overall, the results of this study show that, taken together, variable and person-centered approaches to research may help strengthen the sometimes fragile relationship between personality and leader effectiveness. / Ph. D.

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The purpose of this research study was to explore the relationship between learning styles, psychological types and multiple-choice standardized achievement examination performance of nurse aide students with typology being the gross indicator using a non-experimental, comparative and descriptive approach. The study sample included nurse aide students (N = 326) seeking nurse aide certification selected through a stratified random sampling technique. The participation rate for completed MBTI® inventory was 58.42% (N = 326). The learning styles and psychological types were measured against the Myers-Briggs Type Indicator® Form M in North American English. The multiple-choice standardized achievement examination performance of nurse aide students was determined by Illinois Nurse Aide Competency Examination (INACE) conducted in January 2017. All the research questions and hypotheses compared mean of overall test scores and means of overall test scores based on specific duty areas (i.e. communicating information, performing basic nursing skills, performing personal skills, performing basic restorative skills, providing mental health and social service needs, and providing for residents’ rights) between different groups using one-way analysis of variance (ANOVA) and one-way multivariate analysis of variance (MANOVA). The findings of the study indicated a statistically significant relationship between mean scores of nurse aide students with Sensing (S) and Intuition (N) learning preferences by perception on overall test performance and test performance based on specific duty areas of the INACE with the mean of nurse aide students with the Sensing (S) learning preference being numerically highest (M = 81.85) than Intuition (N) learning preference (M = 79.96%). Additionally, there were no statistically significant relationships between learning preferences by source of energy (Extraversion – E and Introversion – N), learning preferences by reaction to information or making decisions (Thinking – T and Feeling – F), learning preferences by preference to life style (Judging – J and Perceiving – P), learning preference combinations by orientation to energy and perception (IS, IN, ES, and EN), learning preference combinations by perception and attitude (SP, SJ, NP, and NJ), learning preference combinations by mental process (ST, SF, NF, and NT), and 16 psychological or personality types or learning approaches (ISTJ, ISFJ, INFJ, INTJ, ISTP, ISFP, INFP, INTP, ESTP, ESFP, ENFP, ENTP, ESTJ, ESFJ, ENFJ, and ENTJ) and Illinois Nurse Aide Competency Examination (INACE) performance among nurse aide students. The findings suggested that students with Introversion (I), Sensing (S), Thinking (T), and Perceiving (P) learning preferences had better overall test score on the Illinois Nurse Aide Competency Examination (INACE). Further research with a larger sample is recommended. The findings from the study and review of literature will guide nurse aide trainers and students, improve Illinois Nurse Aide Competency Examination; and increase nurse aide students’ retention efforts by utilizing the MBTI® assessment tool along with understanding and implementing the underlying concepts. Keywords: Personality Type, Psychological Type, Academic Achievement, Academic Aptitude, Type Theory, Standardized MCQ Tests, Standardized Tests, Cognitive Attribute, Academic Success, Achievement Tests, Learning Styles, Myers-Briggs Type Indicator®

The purpose of this study was to determine if psychological type, economic status, and minority classification had an effect on the pass/fail rates of vocational nursing students. The rationale for conducting this study was based on the need for the institution to maintain program viability and successfully retain students. The personality types of vocational nursing students were measured using the Myers-Briggs Type Indicator. Measures of economic status and minority classification were obtained through subject self-report. Students enrolled in a vocational nursing program at a small North Texas community college were studied. The Chi-square Test of Independence with a 2 x 2 design was employed. Findings indicated that there was a statistically significant relationship between the pass/fail rates of thinkers versus feelers in the vocational nursing classroom. Findings did not indicate a statistically significant relationship between the pass/fail rates of extraverts versus introverts; sensers versus intuitives; or judgers versus perceivers in the vocational nursing classroom. Findings also suggested that there were no significant relationships between the pass/fail rates of individuals with poverty versus non-poverty economic statuses, nor between individuals with minority versus non-minority classifications. Based on this study, vocational nursing students psychologically typed as thinkers, may have lower passing rates in the vocational nursing classroom setting.

Written communication is an integral part of any organisation regardless of size or the nature of its business. The writer chooses words that should be understood by the readers. However, these words have been chosen based on a variety of factors, one of which is personality type, and the writer's personality type may differ from that of the readers. The research question underpinning this study is - In what ways, if at all, do personality types (as determined by the Myers-Briggs Type Indicator (MBTI) and most frequently found in management positions), select and use different words and phrases when writing business communication? To investigate this question, the psychological type theory of Jung, the personality type theory of Briggs and Myers, and organisational communication theory are applied. The methodology used is descriptive research with the documents analysed using content analysis, employing NUD.IST Vivo in conjunction with manual assessment. The research findings confirm that each personality type does use different words, validating personality type theory and therefore, making a contribution to the expanding body of research in this field. The knowledge gained from this study has significance in areas related to organisations as well as education and communication theory.