Removing helpers and measuring the consequences, changing the ratio of helpers to young by temporarily removing or adding young, or using statistical analyses to control for particular variables are all techniques that have been employed to try to determine if helping
A) causes increased reproductive success in breeders.
B) is correlated with increased reproductive success in breeders.
C) is more common among birds than mammals.
D) is voluntary or coerced.

Question

Quizplus · Accepted Answer

These techniques are experimental and analytical methods used to establish causation, specifically to determine if helping directly causes increased reproductive success in breeders.

Removing Helpers and Measuring the Consequences, Changing the Ratio of Helpers