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

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Green<br />

Blue<br />

Brown<br />

White<br />

Black<br />

Intensity<br />

Painted line<br />

Drawn line<br />

Space<br />

Em Tone<br />

Form<br />

.994<br />

.993<br />

.966<br />

.994<br />

.998<br />

.962<br />

.950<br />

.983<br />

.993<br />

.961<br />

.992<br />

.988<br />

.984<br />

.934<br />

.988<br />

.995<br />

.926<br />

.905<br />

.966<br />

.987<br />

.925<br />

.984<br />

Table 19 presents the results <strong>of</strong> the inter-rater correlations analysis. <strong>The</strong> two<br />

statistics support each other and give scores for each <strong>of</strong> the 15 elements <strong>of</strong> the test and<br />

are comparable with every other study which has been covered in the literature analysis.<br />

As the significance <strong>of</strong> a reliability co-efficient is its absolute size, the closer to 1.00 the<br />

better, the overall reliability for raters was excellent for each element across the range <strong>of</strong><br />

paintings (alpha >.98): Bausell's recommended reliability floor <strong>of</strong> .60 is well exceeded 279 .<br />

However, Altman's point on the inadequacy <strong>of</strong> the correlation coefficient is well taken,<br />

since the variation in the subject matter (pictures 1-7) is quite large (see raw data tables<br />

1-15, which show the data count for each rater for each variable, appendix 2), and this has<br />

possibly falsely increased the value <strong>of</strong> r, because <strong>of</strong> large fluctuations. It is<br />

inappropriate to use a measure which is sensitive to variation in the subjects and Altman<br />

extends this criticism to the use <strong>of</strong> regression analysis for the same purpose. It is<br />

however wise to use a correlation index, cautiously for support, to check for negative<br />

correlations; even though the level <strong>of</strong> scoring may be close, its rhythms may vary. It<br />

remains to say that the most informative statistics we can get for this study are those<br />

279<br />

R. Barker Bausell (1986), A Practical Guide to Conducting Empirical Research , New York: Harper<br />

Row, p.204-6.<br />

226

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