“…Alternatively, the proximity data may reflect control by the CS of a competing response tendency, such as goal tracking. Goal tracking has been reported in autoshaping procedures with rats (e.g., Boakes, 1977;Davey & Cleland, 1982;Farwell & Ayres, 1979;Henton, 1978;Holland, 1977), and with pigeons (Newlin & LoLordo, 1976;Silva et al, 1992;van Hest et al, 1986;Wasserman, 1973).…”