Achievement & Interpersonal Trait Scales

This 142-item collection measures 15 constructs keyed to the scales of the Jackson Personality Inventory–Revised (JPI-R; Jackson, 1994) — traits of thinking style, interpersonal manner, and dependability such as Complexity, Breadth of Interest, Innovation, Sociability, Social Confidence, Empathy, Cooperativeness, Risk Taking, Organization, Traditional Values, and Responsibility — each with its public-domain IPIP scale.

Douglas N. Jackson was one of psychology's most rigorous test builders: he championed construct-driven scale development — define the construct from theory first, write items to it, then cull them for convergent and discriminant power — as the alternative to the era's empirically keyed inventories. The Jackson Personality Inventory, first published in 1976, applied that program to normal-range social and cognitive styles; the 1994 revision reorganized it into the fifteen scales represented here (Jackson, 1994).

Jackson also kept alive a structural dissent from the five-factor consensus, arguing with colleagues from factor-analytic evidence that personality space is better described by six factors than five (Jackson, Paunonen, Fraboni, & Goffin, 1996) — a position his Six Factor Personality Questionnaire, also represented on this platform, made concrete.

The scales here are original public-domain IPIP items keyed to constructs similar to the JPI-R's scales; scores here are not scores on the Jackson Personality Inventory–Revised itself, and its published norms and validity evidence do not transfer to this form. Scale membership and reverse-keying are taken verbatim from Goldberg's IPIP multi-scale map (ScalesFor967items), with construct names as catalogued at ipip.ori.org.

Every construct is reported against Eugene–Springfield Community Sample reference values in the norms section.

“Accomplish a lot of work.”

Illustrative only. During administration items are presented one screen-set at a time; response-key direction is never shown to respondents.

Item responses are summed within each scale (reverse-keyed items recoded first) and expressed as a population percentile against the cited reference sample, with a reliability-based confidence range where α is published.

Norms computed from the Eugene-Springfield Community Sample (ESCS) — Lewis R. Goldberg’s adult community panel from Eugene and Springfield, Oregon (Harvard Dataverse, doi:10.7910/DVN/UF52WY). This is a community sample and is NOT nationally representative. The mean, standard deviation, reference N and Cronbach’s α were computed directly from the raw IPIP item-level responses on THIS scale’s exact item set and reverse-keying (complete cases); reference N varies by scale and is shown with each scale below. The confidence range uses the standard error of measurement (SEM = SD·√(1−α)) from that computed α.

Public-domain items from the International Personality Item Pool (Goldberg, L. R., 1999; ipip.ori.org). Scale membership and reverse-keying taken verbatim from Goldberg's IPIP multi-scale map (ScalesFor967items). Construct names from ipip.ori.org.