The population with schizophrenia is characterised by a leftward shift in handedness-sinistrality.

Charlie thought, I must have inherited my sinistrality from him.

Today is International Left-handers Day, when left-handers are asked to celebrate their sinistrality and increase public awareness of the advantages and disadvantages of being left-handed.

Therefore the aim of this study was to investigate the strength of manual lateralisation in patients with first episode schizophrenia, taking into account familial sinistrality.