 John B. Watson famously claimed that if he were to be given a dozen healthy infants, he could shape them into anything – doctors, lawyers, artists, beggars, or thieves – regardless of their background or genetic predispositions. First, he completed experiments with eight-month-old Albert, and later, he applied his theory when raising his own children. In essence, he applied the scientific method to human psychology which he called behaviorism. With the little Albert experiment, Watson used the method of classical conditioning to program a baby to be afraid of a lab rat. Earlier, Pavlov demonstrated how conditioning can trigger biological responses that are inherited genetically. Watson hypothesized that we can also instill new behaviors that were not inherited. To conduct the experiment, Watson and his assistant Rosalie Rayner placed the boy in a room where a white rat was allowed to roam around. First, the boy showed no fear. Then, Rayner struck a steel bar with a hammer every time Albert reached out to touch the rat, scaring Albert and causing him to cry. Eventually, Albert tried to get away from the rat, showing that he had been conditioned to fear the rat. Weeks later, Albert showed distress towards any furry object, showing that his conditioning had not only been sustained but also generalized. Watson assumed that our behavior is either a reflex evoked by a stimulus or a consequence of our individual history of earlier exposure to reinforcements and punishments paired with our current motivational states and stimuli. Unlike Freud and Young, he was not interested in thoughts or the mind, because in his opinion, the analysis of actions and reactions was the only way to apply the scientific method to psychology and get objective insight into human behavior. He thought of psychology as an objective branch of natural science, its goal, the prediction and control of behavior. Like his fellow behaviorists, he believed that intelligence, temperament and personality are determined by the environment in which the child is raised. Watson published The Psychological Care of Infant and Child. In his book, he advised parents not to touch their children too often and keep an emotional distance so as not to spoil them. Playing with children, he warned, would interrupt their routines. A happy child doesn't cry or seek attention. His book became a bestseller and soon other scientists of his time advised against showing affection. Some western governments started to hand out leaflets advising that parents should stop kissing their children. Parents developed the idea that children should be left to sit quietly during the day. During the night, they should be left crying alone until they fall asleep, a method called sleep training. Watson, who had a difficult childhood, wanted to be a good father and applied his methods to his four children, John, Mary, James and William. Unfortunately, things didn't turn out as planned. John complained throughout his entire life about intolerable headaches and died early in his fifties. Mary developed a drinking problem and attempted suicide, like her brother James. William took his own life at age 40. Watson allegedly admitted that he regretted writing about child rearing as he realized he didn't know enough about it to do so. Towards the end of his life, he became reclusive and prior to his death in 1958, he burned all of his recent papers. What do you think? William was convinced that the kind of nurturing we receive can determine our life path, claiming that he could turn an infant into any man he wishes. In his own family, though, depression and bad habits were passed on from generation to generation. Does this happen due to genetic predispositions or is it the effect of a child's unfortunate upbringing? Sprouts videos are published under the Creative Commons license. That means our videos are free and anyone can download, edit and play them for personal use. And public schools, governments, and non-profit organizations can also use them for training, online courses, or designing new curriculums. If you want to help us reach more students, you can subscribe to our channel and hit the bell button or share this video with a friend. To help us stay independent and support our work, you can join our patrons and contribute. Please visit Patreon.com slash Sprouts. Even $1 can make a difference. If you have deep insights into academic topics and want to help us explain complicated ideas and simple language, please contact us at SproutsSchools.com.