One $2013$ study asked almost $2,500$ workers to analyze medical images for $$objects of interest.$$ They told one group that the work would be discarded; they told the other group that the objects were $$cancerous tumor cells.$$ The workers were paid per image analyzed. The latter group, or $$meaning$$ group, spent more time on each image, earning $10\%$ less, on average, than the $$discard$$ group$$but the quality of their work was higher. What can we infer from this?