This experiment produced six independent sets of observations, so the appropriate analysis was by ANOVA or equivalent. The assumptions of equal variances and Normality both are somewhat shaky but I think are acceptable, given the advantages of ANOVA for the follow-up analyses needed to answer the questions. The first question could be answered by either of two methods, depending on exactly how ...

A large nurober of investigations have been undertaken to develop technical systems in order to enable a tactile substitution of speech for the deaf. These aids have been evaluated with various experimental procedures (identification and discrimination tests, learning experiments, tracking procedures and other overt behaviour methods). In order to find additional evidence for the processing and...