Fig. 4.
Production effort toward H as a function of compensation effort, assuming a foraging/processing tradeoff. Solid horizontal lines represent sex-specific production requirements for H to satisfy the diet breadth requirement, given the sexual division of labor constraint. Diagonal dashed lines represent actual production effort toward H (here denoted TH), assuming for simplicity that there are no differences in production efficiency between males and females. A steeper negative slope indicates more rapid declines in productivity toward H for a given level of compensation effort, dependent on the amount of this effort allocated toward foraging versus processing. Where the diagonal dashed lines intersect with the solid horizontal lines, actual production effort has fallen below the sex-specific diet breadth requirement. Thus, aggregate production effort has fallen below the overall diet breadth requirement. First, note that when more compensation effort is allocated to processing (small-dashed line), production effort toward H falls below the diet breadth requirement at a lower level of overall compensation effort. Also note that production effort falls below the male production effort requirement at a lower level of compensation effort than for females. While the difference between maximum allowable compensation efforts with and without processing allocation is larger for females (indicated by the space between vertical dashed lines), the female tradeoff between foraging and processing compensation occurs at much higher levels of overall compensation effort requirements than for males.