Response Validity Battery
The Response Validity Battery packages three complementary checks on how a person answered: Chapman Infrequency (careless / non-credible responding; cutoff >2 = invalid), the Marlowe–Crowne Social Desirability Scale Short Form C (MC-SDS-13; raw score and descriptors — open Crowne M/SD norms remain deferred), and the NovoPsych-style 8-item Socially Desirable Responding (SDR) index mirrored from IPIP-NEO-120 stems (raw 8–40). A DSQ-88 Lie slot is reserved for a later release when Daniel’s items are in-repo — it is not invented here.
At a glance
Detailed write-up pending
A full, citation-backed scientific write-up for this scale — overview, clinical use, and psychometrics in the voice of a dissertation "Measures" section — has not yet been authored. To honor the platform's no-fabricated-sources rule, this page currently shows only the verified registry facts above (item count, structure, scoring, and any published norms). No validity coefficients, reliability figures, or citations are shown here that cannot be traced to a named source; the authored write-up will be added once its sources have been read and recorded in the plan-integrity file.
Subscales
Infrequency (Validity) 13 items
a Chapman-style check for careless, random, or non-credible answering
Social Desirability (MC-SDS-13) 13 items
the tendency to describe oneself in socially approved, favorable terms
Socially Desirable Responding (SDR) 8 items
a validity index of overly favourable self-description (impression management and/or self-deception; Paulhus, 2002), scored from eight existing IPIP-NEO-120 items — not a sixth personality factor
Example item
“On some mornings, I didn’t get out of bed immediately when I first woke up.”
Illustrative only. During administration items are presented one screen-set at a time; response-key direction is never shown to respondents.
Scoring & interpretation
Item responses are summed within each scale (reverse-keyed items recoded first) and expressed as a percent of the maximum possible score. No normative percentile is applied — there is no verbatim-matched published norm for this exact item set.
| Band | Threshold | Interpretation |
|---|---|---|
| Infrequency (Validity): Protocol valid | ≥ 0 | Two or fewer infrequency items were endorsed, which is within the expected range. This validity check shows no evidence of careless, random, or non-credible responding, so the accompanying schizotypy scores can be interpreted normally. |
| Infrequency (Validity): Protocol validity concern | ≥ 3 | More than two infrequency items were endorsed. Per the scale's published rule this protocol is considered invalid: the responses may reflect careless, random, or non-credible answering, and the accompanying schizotypy scores should be interpreted with caution or set aside. This is a response-quality flag, not a clinical or diagnostic finding. |
Source & citation
Infrequency Scale (Chapman & Chapman, unpublished; revised 2012); Reynolds, W. M. (1982). Development of reliable and valid short forms of the Marlowe–Crowne Social Desirability Scale. Journal of Clinical Psychology, 38(1), 119–125; SDR items from the public-domain IPIP-NEO-120 (Goldberg / Johnson), keyed to the NovoPsych Socially Desirable Responding validity index (Paulhus, 2002 framing).
Infrequency Scale (Chapman & Chapman); Marlowe–Crowne Form C (Reynolds, 1982); SDR stems from IPIP-NEO-120. DSQ-88 Lie: TODO — not in catalog; slot deferred.