Bias in cusp coefficient A for halos that will fall into another halo at least 100 times more massive in the next 3%–6% of a Hubble time. As a function of halo mass and time (parametrized by σ₀; different colors), we show the ratio between the median A for these halos and the median A for all field halos. We restrict our consideration to halos of at least 32 simulation particles, we use halo mass bins of width ﹩{\rm{\Delta }}\mathrm{ln}M=1.1﹩, and we only include mass bins with at least 30 halos.