“…The severity of these effects tends to be dose dependent (Hommer, 1991). Numerous other cognitive functions have been reported to be negatively affected and include verbal fluency (Kirkby et al, 1995), psychomotor speed/performance (Allen, Curran, & Lader, 1991;Fleishaker, Garzone, Chambers, & Sirocco, 1995;Gorissen, Eling, van Luijtelaar, & Coenen, 1995;Seppala et al, 1980), reaction time , coordination and attention (Curran, Schiwy, & Lader, 1987;Hommer, Weingartner, & Breier, 1993;Seppala et al, 1980;Smimrne, Ferini Strambi, Pirola, & Tancredi, 1989), effortful processing (Joyce & File, 1995), episodic memory (Hege, Ellinwood, Wilson, & Helligers, 1997;Joyce et al, 1995;Mintzer et al, 2001), semantic memory (Massin-Krauss, Bacon, & Danion, 2002) and explicit memory (Curran, Gorenstein, & Lader, 1993;Hommer et al, 1993).…”