PT  - JOURNAL ARTICLE
AU  - KILLEEN, PETER R.
TI  - Superstition: A Matter of Bias, Not Detectability
AID  - 10.1126/science.199.4324.88
DP  - 1978 Jan 06
TA  - Science
PG  - 88--90
VI  - 199
IP  - 4324
4099  - http://science.sciencemag.org/content/199/4324/88.short
4100  - http://science.sciencemag.org/content/199/4324/88.full
SO  - Science1978 Jan 06; 199
AB  - Pigeons discriminated between stimulus changes dependent on their pecking and stimulus changes occurring independently of their behavior. Their performance was accurate, and when the payoffs for "hits" and "correct rejections" were varied, their response bias varied in a fashion similar to that of human observers detecting signals in a background of noise.