Short forms of Wisconsin Schizotypy Scale

Winterstein, Silvia, Kwapil, Kaufman, Reiter- Palmon, & Wigert, (2011).


1) The magical ideation scale.

2) Perceptual aberration scale.

3. Revised social anhedonia scale.

4) Physical anhedonia scale.

The short forms had higher alpha values than would be predicted by the Spearman-Brown formula, which suggests that they retained the relatively more effective items from full scales—Winterstein, Silvia, Kwapil, Kaufman, Reiter-Palmon & Wigert, 2011.

The positive and negative symptom dimensions correlated modestly (r = .13)—Winterstein, Silvia, Kwapil, Kaufman, Reiter-Palmon & Wigert, 2011.

Oxford- Liverpool Inventory of Feelings and Experiences


Mason, Claridge, & Jackson (1995)

1) Unusual experiences

2) Cognitive disorganisation

3) Introvertive anhedonia 4) Impulsive non-conformity

All scales have highly adequate internal consistency as assessed by coefficient alpha.

Scale 1, α = .89

2, α = .87

3, α = .82

4, α = .77

Mason, Claridge, & Jackson (1995)

Obsessive- Compulsive

Obsessive- Compulsive Inventory Short Version (OCI-R)

Foa, Huppert, Leiberg, Kichic, Hajcak, & Salkovskis, (2002).


1) Washing


3) Ordering

4) Obsessing

5) Hoarding

6) Neutralising

Test-retest reliability:

Spearmans correlations- Patients diagnosed with OCD ranged from .74 to .91. Nonanxious controls ranged from .57 to .87— Reid, Rosen, Arnold, Larson, Mason, Murphy, Storch, 2011.

Results indicate that the OCI-R is a psychometrically sound and valid measure of OCD and its various symptom presentations. The instrument also evidenced good convergent validity, and performed well in discriminating OCD from other anxiety disorders The OCI-R is recommended as an empirically validated instrument that can be used in a range of clinical and research settings for research on OCD—Abramowitz & Deacon, 2006.

Obsessive- Compulsive Inventory (OCI)

Foa, Kozak, Salkovskis, Coles, & Amir (1998).


1) Washing

2) Checking

3) Doubting

4) Ordering

5) Obsessing

6) Hoarding

7) Mental Neutralising

Test-retest reliability for the controls, distress (OCD, r = .87; controls, r = .89) and frequency (OCD, r = .84; controls, r = .90 total scores.

The test-retest reliability for the subscales exceeded .80, with the exception of Ordering distress (r = .77) and Ordering frequency scores (r = .79) in the OCD sample and the Doubting distress (r = .77) and Hoarding distress (r = .68) scores in the control sample—Foa, Kozak, Salkovskis, Coles, Amir, 1998.

Discriminative validity: Comparisons of means for the total distress score revealed that the OCD group reported greater distress on the OCI than did the other 3 groups. Comparisons of means revealed that the OCD group reported more frequent OCD symptoms than did the remaining 3 groups on all but the Hoarding subscale. Convergent validity: The validity of the OCI total distress and frequency scales was assessed by correlating (Pearsons correlations) the OCI scores of the OCD patients with scores obtained on other measures of OCD symptoms: Y-BOCS, CAC, MOCI. For the OCD sample, the coefficients were quite high, ranging from .41 to .93 with MOCI—Foa, Kozak, Salkovskis, Coles, Amir, 1998.