With respect to characteristics other than gender, a test proposed by TV critic Eric Deggans asks whether a film that is not about race has at least two non-white characters in the main cast,  and similarly, writer Nikesh Shukla proposed a test about whether there are two main characters who are people of color , who talk to each other without mentioning their race.   The " Vito Russo test" created by the LGBT organization GLAAD tests for the representation of LGBT characters in films, and asks: Does the film contain a character that is identifiably LGBT, and is not solely or predominantly defined by their sexual orientation or gender identity, as well as tied into the plot in such a way that their removal would have a significant effect?  
In the studies Mischel and colleagues conducted at Stanford University,   in order to establish trust that the experimenter would return, at the beginning of the "marshmallow test" children first engaged in a game in which they summoned the experimenter back by ringing a bell; the actual waiting portion of the experiment did not start until after the children clearly understood that the experimenter would keep the promise. Participants of the original studies at the Bing School at Stanford University appeared to have no doubt that they would receive a reward after waiting and chose to wait for the more desirable reward. However, Mischel's earlier studies showed there are many other situations in which children cannot be certain that they would receive the delayed outcome.     In such situations, waiting for delayed rewards may not be an adaptive response.