Contrafreeloading data from Budgerigars

Contrafreeloading (CFL) refers to animals' tendency to prefer obtaining food through effort rather than free access to food. This dataset is collected from Budgerigars to investigate the potential factors on contrafreeloading levels. Factors including pre-training, food deprivation and the challenge to acquire food. Two dependent variables were tested: first choice and challenging selection time proportion. ID and gender were random factors.