Mental models or implicit theories held by adults about everyday problem solving were studied. Research questions were posed to 12 male and 12 female adults, aged 25 to 60 years, from a wide range of educational and occupational orientations. Subjects were interviewed in pairs. Verbal Protocol Analysis was used to analyze the data from two…

The elements of statistical formulae that cause people to perceive them as difficult were studied, working from theoretical bases that involve cognitive load, motivational perception, and impasse driven learning. In a pilot study conducted to identify difficulties that novices perceive while learning statistical formulae, 22 students in an…

This study examined planning processes and the acquisition of expert problem solving skills among individuals of different expertise on tasks of increasing complexity. Twelve French-speaking adult students of machining (novices) and 12 French-speaking teachers of machining (experts) in Quebec (Canada) were randomly assigned to a simple or complex…

How people evaluate primary and secondary sources when considering historical questions was studied by asking eight historians and eight high school seniors to think aloud while reviewing written and pictorial documents about the Battle of Lexington. Differences between the groups are discussed concerning cognitive processes and beliefs about…