Presents "fail-safe" lessons for emergencies and substitutes. Describes an experimental design with six steps, designed to help teachers teach students some things about themselves, such as whether boys are better spellers than girls. Offers other examples from the classroom. (EL)

A study was conducted to determine whether manipulating the classroom environment to be either apprehension producing (AP) or apprehension reducing (AR) could significantly change the level of students' dispositional writing apprehension. Five student teachers and one secondary education supervisor volunteered to participate in the experiment and…