Experimental studies manipulate factors to determine their effects.
An experimental study involves manipulating one variable (called an independent variable) to determine its effect on another variable (a dependent variable). An example of a manipulated variable (independent variable) can be hours of sleep, and the dependent variable (resulting variable) can be speed of reflexes. Hours of sleep (independent variable) can be manipulated (increased or decreased) to see the result it has on speed of reflexes (outcome or dependent variable).
Answer:
Steven F. Greul writes that a study published in June 2010 concluded that playing a violent video game for only 30 minutes caused a decrease in brain activity in a region of the frontal lobe that is known to be important in the ability to inhibit impulsive behavior.
Explanation:
Steven F. Gruel is an attorney who defends the idea that violent video games shouldn't be played by children. According to Gruel, studies have proven the existence of a connection between violent video games and impulsive behavior. Playing a violent video game, concluded one of those studies, for 30 minutes is already enough to reduce brain activity in the frontal lobe. However, more recent studies defend the idea that violent games have only a short-term influence over children.
Language is both a system of communication between individuals and a social phenomenon
