Does brain size affect mate choice? An experimental examination in pygmy halfbeaks

This dataset allows for an examination into the repeatability between external and internal brain measurements in pygmy halfbeaks and the repeatability between observers of external measurements (part 1). It also allows an examination of whether mate choice is affected by female brain size and the difference in sexual ornamentation between two males when a female is choosing in a dichotomous choice chamber, using both categorical and continuous variables (part 2). The code allows for these to be statistically investigated.