This is a key feature of unstructured observations in which all instances of a target behaviour are recorded. This not be practical for very complex behaviours.
Event Sampling
This involves counting the number of times a particular behaviour occurs in a target individual or group.
Time sampling
This involves recording behaviour within a pre-established time frame. A record lasting for a predetermined length of time is made at regular intervals.
When it is it appropriate to use event sampling
Event sampling is used when an event happens infrequently and could be missed if time sampling was used
When is it appropriate to use time sampling?
Time sampling is effective in reducing the number of observations made. However, instances when behaviour is sampled may be unrepresentative of the whole observation
