“…In two-way active avoidance, just the opposite is true. With shock intensities greater than .5 milliampere, the rate of acquisition of two-way active avoidance steadily declines as shock intensity rises (Beatty & Beatty, 1970;Davis, Mook, & Brush, 1958;Johnson & Church, 1965;Kurtz & Shafer, 1967;Levine, 1966;Martin, Powell, & Kamano, 1967;McAllister & McAllister, 1971;Moyer & Korn, 1964;Overmier & Seligman, 1967;Theios et al, 1966).…”