1. What is the effect of a contract when one party to the contract has made a mistake?
A. The contract is valid unless the party can show to the court that the mistake
was not due to his own lack of care
B. The contract is void as the party did not make the contract willingly
C. The contract is void as it is unfair to the party that has made the mistake
D. The contract is voidable as the party should be given the opportunity to
choose whether he wants to continue with the contract or not

Dr. laguardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. he conducts a quasi-experimental study in which he examines football players before and after the regular season using the benton facial recognition test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. he finds that players who had concussions during the regular season performed worse on the benton facial recognition test than did players who did not experience which of the following is true regarding external validity in dr.laguardia's study? a. because dr. laguardia selected participants who actually experienced concussions, the study b. because dr. laguardia's study is a quasi-experiment, it is impossible to obtain c. because dr. laguardia's dependent variable was assessed in the laboratory, the study d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.