ABSTRACT
Yet the crux of the issue is how one deals not with the cases in which observations are relatively complete but with those in which observations are incomplete due either to the habits of the monkeys, the habits of the observer, or both. How does one treat cases in which the observational record is truncated due to the fact that the infant and its attacker fell into foliage; or cases in which the wounding of an infant was clearly observed during daylight hours, but the infant’s disappearance occurred only on the subsequent night when, for under standable reasons, observations were not in progress; or cases similar to the preceding but in which the infant’s disappearance occurred sev eral days after the observed attack? Even among those infant disappear ances for which observations are relatively complete, how should one deal with the data in terms of hypothesis testing if, for example, the infant’s age was not known with certainty?
