Architects and non-architects made Semantic Differential ratings of colour samples (chips) and a simulated interior space (a model). In analyses of total samples’ ratings (architects and non-architects) of (a) colour chips and (b) models, and individual sample analyses, (c) architects’ chip judgements, (d) architects’ model judgements, (e) non-architects’ chip judgements, and (f) non-architects’ model judgements, five factors occurred, though not necessarily all in any one analysis. These were: (i) dynamism; (ii) spatial quality; (iii) emotional tone; (iv) evaluation; (v) complexity. Linear correlations between parameters of Munsell Color System and above factors in various analyses were calculated, while parallel analyses were carried out employing a graphical technique described by Sivik (1974a) involving isosemantic maps. In all analyses, linear correlations between colour parameters and judgements were found for dynamism factor, spatial quality factor, and emotional tone factor. They were associated respectively with chroma, value, and hue. Inspection of isosemantic maps indicated subsidiary effects of non-dominant dimensions of a non-linear sort, though maps also exhibited linear relations. Linear correlations were low or non-existent for evaluation and complexity factors, and complex nature of their determinants was clear from isosemantic maps. determinants of judgements were similar for architects and non-architects, with exception of evaluative judgements for models in which markedly different determinants were noted.

Comparability of present findings with other studies carried out in a variety of countries over a 20 year period was high for dynamism, spatial quality, and emotional tone, and it is suggested that there may be something inherent in response to colour in relation to such judgements. Recent physiological work is discussed, and its limitations in terms of colours sampled and an overconcentration on hue dimension noted. In contrast, it is suggested that dimensions of judgement, such as evaluation or complexity, reflect to a greater extent culture or training, and are hence independent of basic colour attributes.