titled Self-Regulation Failure: An Overview, he express that self-regulation is complex and multifaceted. Baumeister lays out his “three ingredients” of self-regulation as a case for self-regulation failure. Research Many studies have been done to test different variables regarding self-regulation. Albert Bandura studied self-regulation before, after and during the response. He created the triangle of reciprocal determinism that includes behavior, environment and the person (cognitive, emotional and physical factors) that all influence one another. Bandura concluded that the processes of goal attainment and motivation stem from an equal interaction of self-observation, self-reaction, self-evaluation and self-efficacy. In addition to Bandura's work, psychologists Muraven, Tice and Baumeister conducted a study for self control as a limited resource. They suggested there were three competing models to self-regulation: self-regulation as a strength, knowledge structure and a skill. In the strength model, they indicated it is possible self-regulation could be considered a strength because it requires willpower and thus is a limited resource. Failure to self-regulate could then be explained by depletion of this resource. For self-regulation as a knowledge structure, they theorized it involves a certain amount of knowledge to exert self control, so as with any learned technique, failure to self-regulate could be explained by insufficient knowledge. Lastly, the model involving self-regulation as a skill referred to self-regulation being built up over time and unable to be diminished; therefore, failure to exert would be explained by a lack of skill. They found that self-regulation as a strength is the most feasible model due to studies that have suggested self-regulation is a limited resource. Dewall, Baumeister, Gailliot and Maner performed a series of experiments instructing participants to perform ego depletion tasks to diminish the self-regulatory resource in the brain, that they theorized to be glucose. This included tasks that required participants to break a familiar habit, where they read an essay and circled words containing the letter 'e' for the first task, then were asked to break that habit by performing a second task where they circled words containing 'e' and/or 'a'. Following this trial, participants were randomly assigned to either the glucose category, where they drank a glass of lemonade made with sugar, or the control group, with lemonade made from Splenda. They were then asked their individual likelihoods of helping certain people in hypothetical situations, for both kin and non-kin and found that excluding kin, people were much less likely to help a