Big-Five Factor Markers

These are Goldberg's (1992) 100-item-tradition Big-Five factor markers in their 50-item public-domain IPIP form: ten markers per factor for Extraversion, Agreeableness, Conscientiousness, Emotional Stability, and Intellect/Imagination. The marker scales are the historical backbone of the lexical Big Five and remain a common baseline measure in personality research.

The exact public-domain item set is administered and scored in the keyed direction, with Eugene–Springfield Community Sample reference values shown in the norms section.

The notes below are reproduced from the platform's psychometrics register for this instrument — the same source-cited reliability, validity, and norms text that accompanies its downloadable report.

Goldberg (1992) reports internal-consistency estimates for the Big-Five Marker scales; 10-item domain scales show alphas typically in the .80s–.90s in undergraduate and community samples. Saucier (1994) reports alpha values of .83–.90 for the unipolar 10-item versions.

The 50-item Big-Five Factor Markers show robust factor structure across languages and samples, strong convergent validity with other Big Five instruments (including the NEO-PI-R and TDA), and predictive validity for a broad range of life outcomes (Goldberg, 1992; Saucier, 1994).

Scores are expressed as percent-of-maximum on the 1–5 accuracy scale. No single normative sample is designated for this public-domain pool; scores are interpreted via Higher/Average/Lower bands relative to the scale midpoint.

“Am the life of the party.”

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.

Goldberg, L. R. (1992). The development of markers for the Big-Five factor structure. Items via the International Personality Item Pool (ipip.ori.org).