Introduction

Dyspraxia occurred in 50 per cent of unpreselected left brain-damaged patients reviewed by De Renzi, Motti and Nichelli (1980). De Ajuriaguerra, Hecaen and Angelergues (1960) found constructional dyspraxia in over 60 per cent of their right brain-damaged group. De Renzi, Pieczuro and Vignolo (1966) found 80 per cent of dysphasics to be also dyspraxic.