“…Similarly, low positive affectivity (e.g., sleepy, dull, drowsy, and sluggish) was not synonymous with high negative affectivity (e.g., distressed, scornful, hostile, fearful, nervous, and jittery). Others have similar findings demonstrating the separability of positive-valent and negative-valent constructs for optimism/pessimism (Stallings, Dunham, Gatz, & Bengtson, 1997), interracial attitudes (Katz & Hass, 1988;Katz, Wackenhut, & Hass, 1986;Patchen, Hofman, & Davidson, 1976), and attitudes toward blood and organ donation (Cacioppo & Gardner, 1993).…”