Hydroxycitric acid (HCA), a derivative of citric acid, is found primarily in a small, sweet, purple fruit called the Malabar tamarind or, as it is most commonly called, Garcinia cambogia.hat Is the Scientific Evidence for Hydroxycitric Acid? It remains unclear whether HCA offers any weight-loss benefits. In an 8-week double-blind, placebo-controlled trial of 60 overweight individuals, use of HCA at a dose of 440 mg 3 times daily produced significant weight loss as compared to placebo.
Reasonâs âSwiss Cheeseâ Model of Human Error One particularly appealing approach to the genesis of human error is the one proposed by James Reason (1990). Generally referred to as the âSwiss cheeseâ model of human error, Reason describes four levels of human failure, each influencing the next (Figure 1).
Not surprisingly, Skinner, Piaget, and Freud are the top three. What may be of interest is that Carl Rogers is ranked number 6. Among the reasons cited is Rogersâ groundbreaking work in the development of humanistic or client centered therapy. What made it groundbreaking was his insistence that the model be subject to scientific inquiry and clinical trial. One result of his work was a psychological theory. In that work Rogers advanced a complex set of 19 propositions describing his theory. In this article we will make an effort to provide a brief overview of it. To provide theoretical legitimacy to his clinical work, Rogers wrote 16 books and even more articles explaining how these 19 propositions worked on understanding the human personality.