Psychological Analysis of Employees of the Same Gender, Job Cadre across Ethnic Groups in Nigerian Organisations Dr Akintayo Olufemi Akinwumi Abstract The study looked at the psychological analysis of employees of the same gender, job cadre across the three main ethnic groups in Nigeria including the minorities. The objectives of the research were to determine the differences/similarities between employees of the same gender/work cadre across the ethnic groups in Nigerian Organisations. To do this, the researcher considered the personality factors of the employees such as psychoticism, extraversion/introversion, and neuroticism; job characteristics such as satisfaction with work, pay, promotion, supervision and co-worker; work group functions such as group homogeneity, group goal clarity, group cohesiveness, open group process and internal fragmentation; organisational commitment dimensions such as identification, involvement and loyalty; locus of control and job involvement. To achieve these objectives, data were collected from 520 manufacturing workers from Sharada Industrial Estate, in Kano state; Trans Amadi Industrial layout, Aba, in Imo State and Apapa Industrial layout, in Lagos State of Nigeria using six standardised psychological instruments with appropriate psychometric properties. The instruments used are: Eysenck personality questionnaire (EPQ), Job descriptive index questionnaire (JDI), Work group functions scale (WGFs) and Organisational commitment scale (OCs); Locus of control and Job Involvement questionnaires. The participants consisted of 260 males and 260 females with age between 23 and 65 years. They were randomly selected from the companies. The sample consisted of senior and junior workers distributed across the companies. The workers responded to the six testing instruments used for the study and biographical information questionnaire and their responses were subjected to statistical analysis using the SPSS statistical package. Means and standard deviations were calculated to obtain descriptive results. One way Anova and Scheffe tests were carried out to obtain inferential results. The results showed that both junior and senior female employees differ significantly across ethnic groups in Nigerian organisations. Male junior and senior employees are not different in most of the variables under consideration across ethnic groups in Nigerian organisations. Full Text: PDF DOI: 10.15640/jpbs.v3n1a12