“…The cognitive timer can be with (Glicksohn & Myslobodsky, in preparation;Hoagland, 1933;Rammsayer, 1997;Treisman, Cook, Naish, & MacCrone, 1994) or without (Zakay, 1993a) neurobiological implications, having either a constant (e.g., invariant over method of estimation) or a variable rate of functioning (Allan & Gibbon, 1991;Carlson & Feinberg, 1968;Fetterman & Killeen, 1990;Macar, Grondin, & Casini, 1994;Treisman, 1963;Treisman & Brogan, 1992;Treisman et al, 1994;Treisman, Faulkner, Naish & Brogan, 1990;Zakay, 1989). The notion has been put to empirical test by looking at how arousal manipulations can alter the timer's rate of functioning (Adam, Rosner, Hosick, & Clark, 1971;Aitken & Gedye, 1968;Cahoon, 1969;Frankenhaeuser, 1959;Glicksohn, 1992Glicksohn, , 1996Penton-Voak, Edwards, Percival, & Wearden, 1996;Treisman et al, 1990Treisman et al, , 1992Treisman et al, , 1994Zakay, Nitzan, & Glicksohn, 1983).…”