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).
The following is a brief explanation of the four theories. The first one is the oldest of the four. It is known as the James-Lange theory. As you may have guessed, this theory originated from two theorists called William James (1884) and Carl Lange (1887).