The word CARGO is shown to a split-brain individual so that…

The word CARGO is shown to a split-brain individual so that the first three letters go to the left visual field and the last two letters go to the right visual field. When asked to point a picture of what he saw with his left hand, the person would most likely point to the picture of

As a door swings toward us, its image on our retina goes fro…

As a door swings toward us, its image on our retina goes from square to trapezoidal, but we perceive a door moving in space.  When our friend walks away from us, their image on our retina gets smaller, but we perceive a person of a set size moving away in the distance.  These are examples of

In a laboratory, smokers are asked to “drive” using a comput…

In a laboratory, smokers are asked to “drive” using a computerized driving simulator equipped with a stick shift and a gas pedal. The object is to maximize the distance covered by driving as fast as possible on a winding road while avoiding rear-end collisions. Some of the participants smoke a real cigarette immediately before climbing into the driver’s seat. Others smoke a fake cigarette without nicotine. You are interested in comparing how many collisions the two groups have. In this study, the independent variable is ___________.