the error of rejecting the null hypothesis when it is in fact true. Investigators make this error when they believe they have detected an effect or a relationship that does not actually exist. The projected probability of committing a Type I error is called the significance level or alpha (α) level. Also called alpha error; rejection error.
the selection of a vocation, usually on the basis of such factors as parental guidance, vocational guidance, identification with admired figures, trial or part-time jobs, training opportunities, personal interests, and ability tests.