Experiment to compare visual and verbal performance
A data frame with 80 observations on the following 5 variables.
SubjectSubject number (s1 to s20)
TaskFollow a letter (Visual) or a sentence (Verbal)
ReportPoint response (Visual) or say response (Verbal)
GroupCombination of Task+Report (Letter Point, Letter Say, Sentence Point, or Sentence Say)
TimeResponse time (in seconds)
Subjects carried out two kinds of tasks, one visual (identify letters), one verbal (identify sentences); and to report the results in either of two ways, one visual (pointing at a response), one verbal (speaking a response). Time to complete each task was recorded in seconds.