“…There is a vast body of literature on personality and psychological adjustment factors in younger and middle-aged individuals experiencing sleep problems (e.g., Coursey et al, 1975;Hauri and Fisher, 1986;Kales et al, 1984;Paulsen and Shaver, 1991;Schneider-Helmart, 1987) as well as on the import of daytime stressors (Healey et al, 1981;Rubman et al, 1990;Waters et al, 1993;White and Nicassio, 1990). With several notable exceptions (Frisoni et al, 1993;Morin and Gramling, 1989;Gourash-Bliwise, 1992;Monk et al, 1992;Morgan et al, 1988Morgan et al, , 1989, there is little available information about the relationship between sleep parameters and psychological and lifestyle factors for aging individuals, even though the sleep complaint of most older persons differs from that of younger insomniacs --i.e., sleep maintenance as opposed to sleep onset latency problem.…”