The psychopathology of everyday art: a quantitative Study - World ...

applied between studies but there was high congruency of variables within subcategories.
10 variables between 2 studies gave an item reliability score and there were 6 unreliable
variables although these were spread over 4 subcategories. Reliable subcategories were:
brightness of hue and tone (69, 21, 38) which were undifferentiable in most studies so
are grouped together here. (study 69 did differentiate them and found evaluations of
these elements highly correlated); coloured detail (38), and colour fit (21, 48, 49, 3, 69).
4 studies with the same term definition (75, 14, 36, 44) achieved high reliability on
number of colours, but correlations between raters were very low in study 38. This
study also found low correlations for colours used, found reliable by 3 other studies (14,
48, 49, although two of these used no figures). The raters for study 38 were art trained
and it is likely that there were too many delineations of colour in this study. Therefore
these subcategories are considered reliable when not too complicated. Colour mix was
reliable on premixed colour (38, 48, 49), on surface mixing (38), muddy or watery colour
(but not thick or pure, which probably denotes difficulty in decisions on relative
consistency)(38). Consistency of (i.e. the most prevalent) colour was found unreliable
by 2 studies (38, 69) and the reliability for amount of single colour was only 'acceptable'
in study 56. This was probably due to global assessment of the whole picture, whereas
specifics, such as detail in decoration or outline or masses were reliable. This category
is therefore considered reliable for specific details.
Discrimination: From 21 reliable variables tested for discriminant properties, there were
8 significant results among 3 subcategories. General psychiatric patients, Alzheimer's
patients and depressed patients (14, 36, 75) all scored less than normal controls on
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