1. An instrument for the analysis of rhythmic measures of speech comprising at least one input device having means for manual input solely of a series of discrete input signals representing an input rhythm corresponding to a spoken sequence of syllables, and an output device responsive to the discrete input signals to provide a representation of the input rhythm of a group of the discrete input signals and an indication of a correspondence of said group to a known or predetermined rhythmic group of rhythmic measures of speech stored in the instrument, thus to provide an analysis of the relationship between the spoken sequence of syllables and the known or predetermined rhythmic group.