PALT II As reported in part I, we found by the follow up study several factors of the life history, which have influence on the prognosis. In this part, the relation between the prognosis and some personality traits was studied by the interview and the tests. First, six personality traits measured by the interview were analized. Of these, three were concerned with the abnormality of the intention, of motivation and of suppression. The remaining three were concerned with the other abnormalities. All these six traits. were related with the prognosis (Tables 1-6). Examining these relations more closely, we could classify personality patterns into five classes which effectively predict the prognosis (Table 9). Secondly, as to the Kraepelin's curve, we found that both quantity and pattern of the achievement predict to some extent the prognosis (Tables 10, 11). Analysing the pattern more closely, we found the initial spurt after the rest, the effect of the rest and the number of the droppings to be the factors predicting the prognosis (Table 12). Through these three factors and the quantity of the performance, we could classify Kraepelin's curve into several classes which effectively predict the prognosis (Table 13). Thirdly, we studied the ralation between IQ and the prognosis and that between VQ and the prognosis, and found that has a little influence upon the prognosis (Table 15), but as to VQ, no significant result was obtained (Table 16). Summarizing the above results, we can conclude as follows. The personality pattern (shown by the function of will) and the Kraepelin's curve are related closely to each other, and both have some prognostic value (Table 14). The relations of the personality pattern and Kraepelin's curve to the prognosis correspond to the relation between the prognosis and the life history factors, which was already discussed in part 1 (Table 17). PART III We further investigated the factors concerning the environment and those concerning the relation between personality and the environment. We found that the loss of one or other parents seems to have no influence on the prognosis,(Tables 18, 19), and that such factors as the antisocial atmosphere in the family, the home conflict and the association with gangs do have a bad influence on the prognosis (Tables 22, 23, 24). Considering the relations between each of these three factors and the prognosis with regard to the relation between the various factors and the prognosis described in Parts I and II only the association with gangs was found to be a self supporting factor predicting the prognosis. PART IV Bodily characteristics such as height and weight have no relation to the prognosis. As to the legal pattern of the main delinquency no definite result was ontained (Table 25) As the results of the follow-up study described in Parts I to 7, we have found various personality factors predicting the prognosis. Discussing the various relations mentioned above, some relations between the factors and the prognosis can be considered to be included in a more extensive relation. In the following report these results will be summanarized with the consideration of their significance, and the relation between the social-psycho-logical pattern of the delinquency and the prognosis will finally be discussed.