swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped Psychology as the science which studies thoughts, behavior, soul and emotions is closely connected with other sciences.

Biology takes the primary place in this connection as physiological aspects are closely linked to many psychological concepts. In the 1920s McDougall, a Harvard psychologist, began a series of experiments designed to determine if information and abilities learned and acquired by parents could be inherited and passed to future generations through the genes. In his experiments McDougall placed white rats, one at a time, in a tank of water from which they could only escape by swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped b

y place in this connection as physiological aspects are closely linked to many psychological concepts. In the 1920s McDougall, a Harvard psychologist, began a series of experiments designed to determine if information and abilities learned and acquired by parents could be inherited and passed to future generations through the genes. In his experiments McDougall placed white rats, one at a time, in a tank of water from which they could only escape by swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped began a series of experiments designed to determine if information and abilities learned and acquired by parents could be inherited and passed to future generations through the genes. In his experiments McDougall placed white rats, one at a time, in a tank of water from which they could only escape by swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped e generations through the genes. In his experiments McDougall placed white rats, one at a time, in a tank of water from which they could only escape by swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped swimming to one of two gangways and climbing up. One gangway was brightly lit and the other was not. They received an electric shock if they escaped by the illuminated gangway. McDougall recorded the number of trials required to learn that they could always escape from the unlit gangway.

The first generation of rats received an average of over 160 shocks each before learning to avoid the illuminated gangway. Each successive generation learned quicker than the previous one until, after 30 generations of rats were making an average of only 20 errors each. McDougall concluded this to be evidence for the inheritance of acquired characteristics, but his conclusion was extremely controversial and flew in the face of the orthodox theory of inhe