Background: This study investigated the correlation between risk-taking and relapse among methamphetamine (MA) abusers undergoing the Matrix Model of treatment. Methods: This cross-sectional study was conducted on male patients who were stimulant drug abusers undergoing the matrix treatment in the National Center for Addiction Research. A sampling was done using the availability method includin...

In a lab experiment, we assess the role of voluntary entry on the incidence of severe overbidding and bankruptcies, which are widespread in common value auctions. We show that voluntary entry amplifies overbidding and reduces auction profits. Less experienced, male and more risk averse subjects tend to enter the common value auctions.

In a coordinated four level attack on risk, integration of analytical procedures (i.e. Lean Optimization, PM Analysis, and Optimal Reliability) can be achieved by conducting each one against the backdrop of IONICS, a 6-step methodology facilitating matrix management and defined by: Identify risks, Order by importance, Numerate options, Introduce solutions, Control processes and Synthesize new i...