Choices presented in the bundle-size 1, 3, and 9 conditions.

The delay to the first LLR in all conditions was D₁, with additional rewards in the bundle (where applicable) delivered after D₂, D₃, etc. These additional delays were equal to D₁ multiplied by the order of that delay in the series (e.g., D₂ = D₁*2, D₃ = D₁*3, etc.). The first SSR in all conditions was delivered immediately, with additional rewards in the bundle (where applicable) delivered after D₁, D₂, D₃, etc. Note that with this method of arranging delays, the interval between any two rewards in a given bundle was equal to D₁. Likewise, any given SSR in a bundle was available D₁ units sooner than its paired LLR.