Phenotypic frequency densities without (top) and with (bottom) preparedness.

<p>Density plot for the phenotypic frequency at the end-point (time step 50000) for the different strategies over 100 simulation runs. Solid lines: <i>Danger</i> > 0. Dotted lines: <i>Danger</i> = 0. Blue = Asocial learning (<i>O</i>_<i>0</i>,<i>T</i>_<i>0</i>), yellow = observational learning (<i>O</i>_<i>1</i>,<i>T</i>_<i>0</i>), red = parental learning (<i>O</i>_<i>0</i>,<i>T</i>_<i>1</i>), orange = advanced social learning (<i>O</i>_<i>1</i>,<i>T</i>_<i>1</i>).