“…Demonstrating that the behavior of one person is a relevant part of the environment of another in experimental contexts allows the description of social behavior from a natural science perspective. Early examples of this attempt include studies on cooperation (Hake, Donaldson, & Hyten, 1983; Hake, Olvera, & Bell, 1975; Hake & Schmid, 1981; Hake & Vukelich, 1972, 1973; Hake, Vukelich, & Kaplan, 1973; Hake, Vukelich, & Olvera, 1975; Marwell & Schmitt, 1975; Schmid & Hake, 1983; Schmitt, 1976, 1984, 1987), competition (Buskist, Barry, Morgan, & Rossi, 1984; Buskist & Morgan, 1987; Dougherty & Cherek, 1994; Hake, Olvera, & Bell, 1975; Lindsley, 1966), empathy (Watanabe & Ono, 1986), and altruism (Weiner, 1977).…”