According to this study, apparently not. The study looked at how paying four different hourly rates ($2, $4, $6 and $8) affected things like attention as well as answers.
“Looking at demographics and using measures of attention, engagement and evaluation of the candidates, we find no effects of pay rates upon subject recruitment or participation. We conclude by discussing implications and ethical standards of pay.”
They do find some indication that lower paid workers do not as well on some attention checks. They also suggest that they didn’t have problems getting people to do the study, although each was capped at 99 people. Two things are important to note:
“Our larger concern is for things that we were not able to measure, such as Turker experience. It is possible that more experienced Turkers may gravitate toward higher pay rates, or studies that they feel have a higher pay-to-effort ratio. This is, regrettably, something that we were not able to measure. However, since experimental samples do not tend to seek representative samples on Mechanical Turk, we feel that the risk of any demographic or background differences in who we recruit is that it could then lead to differences in behavior, either through attention to the study or in reaction to the various elements of the study. ”
They also clearly state: “Paying a fair wage for work done does still involve ethical standards.”