Rate of development of red throat ornamentation (a,b) and time taken by males to build a nest (c,d) of male three-spined sticklebacks in relation to their earlier rate of compensatory growth and their sexual responsiveness. Data are plotted separately for the (a,c) winter and (b,d) spring experiments. Within-treatment regression lines are shown by thin dashed lines and are categorized by growth treatment (slowdown: circle and dashed line, catch-up: square and double dashed line, control: triangle and solid line). Larger symbols and grey thicker lines denote treatment mean values and between-treatment regression lines from the estimates of the coefficients of the final models (see [16] for statistical explanation, and table 2 for full statistical analysis).