Need for Order and Cleanliness

Need for Order and Cleanliness is administered here as one of the International Personality Item Pool's single-construct scales: original public-domain items catalogued at ipip.ori.org (Goldberg, 1999) and keyed to one specific individual-differences construct, rather than belonging to a broad multi-factor inventory. This form presents 10 items rated on a 5-point scale; responses are summed in the keyed direction after any reverse-worded items are recoded.

The construct label and item membership follow the IPIP catalog directly. Because this exact public-domain item set is what is administered, the standings shown in the norms section are computed on this form itself (see the cited reference-sample note), not borrowed from any other instrument.

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.

IPIP-based need-for-order scale; reliability estimates for this exact 10-item public-domain operationalization are not available from a single published validation study.

Need for order and cleanliness captures preference for tidiness, structure, and routines — a facet of conscientiousness with established validity for predicting organizational behavior and OC-spectrum symptoms.

Scores are expressed as percent-of-maximum on the 1–5 accuracy scale using Higher/Average/Lower bands. No published normative tables exist for this specific IPIP operationalization.

“Want everything to be "just right."”

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.

International Personality Item Pool (ipip.ori.org).