(1) The study concerns Rorschach, Children Apperception Test, Bender Gestalt Test and Draw‐a‐Man. Data have been obtained on a number of personality variables from 12 pairs of identical twins at the ages of 9;6–10;6. (2) For the Ro 17 out of 21 and for the CAT 15 out of 23 intraclass coefficients are positive. The coefficients for the Gestalt test and Draw‐a‐Man are high and positive. It is argued that intraclass coefficients must be considered as underestimating both the true reliability of the ratings and the correlation between true scores for identical twins. (3) The intertest correlations give support to the construct validity of the ratings on the variables studied. Especially favourable are the intercorrelations for ‘General