Studies reveal that the personality of Kennedy follows one schema of motivation and that this schema was differentley affected by two aspect in each decision to take. Placed in front of a problem where he had the solution to deal wtih an affair (Cuba crisis and de steal crisis), he reacted positively, but in front of a problem where he didn’t had the solution (the Bay of pigs, the Meredith Case), he took refuge in the prospect. A positif reaction was to intensify a need to act, while a wait-and-see reaction reduced this factor. The difference of result (success or failure) was understandable by the fact that its regulating mecansims (pessimism, caution and scepticism) affected every situation in a identical way : an aggressive reaction was returned to manoeuvrable proportions, what pulled adapted action plans, a defeatist reaction was amplified in to confine him on marginal and unsuitable strategies.
