“…Proneness to negative moods and symptoms is significantly greater during the premenstrual and menstrual phases of the monthly cycle (Backström, Sanders, Leask, Davidson, Warner & Bancroft, 1983;Boyle, 1983Boyle, , 1985bBoyle, ,, 1986Boyle & Grant, 1992;DeJong, Rubinow, Roy-Byrne, Hoban, Grover & Post, 1985;Endicott, Nee, Cohen & Halbreich, 1986;Grant & Boyle, 1991;Harrison, Sharpe & Endicott, 1985;Haskett, Steiner, Osmun & Carroll, 1980;MacKenzie, Wilcox & Baron, 1986;Mira, Vizzard & Abraham, 1985;Sampson & Prescott, 1981;Sanders, Warner, Backström & Bancroft, 1983). For example, Haskett, Steiner & Carroll (1980) reported that irritability, restlessness, tension and mood lability were prominent during the premenstruum.…”