Dr. hofstadter has developed a coding system for aggressive behaviors displayed in comic books. he had his assistants read comic books published between 1980 and 1984 and record the number of aggressive acts displayed in each comic. he also has her assistants read comic books published between 1985 and 1989 and record the number of aggressive acts displayed. this approach to studying aggressive behavior may best be categorized as

1. body tissue that is connected to and moves the bones in the body hypertrophy 2. the ability of a muscle to move a weight repeatedly, or for an extended period of time tendon 3. the increase in the size of a muscle fiber in response to resistance training muscle strength 4. the most amount of weight a muscle can move at a single time skeletal muscles 5. the decrease in the size and strength of a skeletal muscle when it is not used atrophy 6. strong body tissue that connects the muscles to the bones muscle endurance