Cliff Broman, Michigan State University (IMAGE) Michigan State University Caption 'These findings provide evidence that the availability of illegal drugs and alcohol in the home while growing up is a critical factor in the later use of substances,' said Michigan State University sociologist Cliff Broman. Credit Michigan State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.