CHECK THIS OUT GUYS!!!
https://www.youtube.com/watch?v=m4b2E38g9a0

The Behavioral Approach

Human behavior is learned, thus all behavior can be unlearned and newbehaviors learned in its place. Behaviorism is concerned primarily with theobservable and measurable aspects of human behavior. Therefore when behaviorsbecome unacceptable, they can be unlearned. Behaviorism views development as acontinuous process in which children play a relatively passive role. It is alsoa general approach that is used in a variety of settings including both clinicaland educational.
Behaviorists assume that the only things that are real (or at leastworth studying) are the things we can see and observe. We cannot see the mind ,the id, or the unconscious, but we can see how people act, react and behave. From behavior we may be able to make inferences about the minds and the brain,but they are not the primary focus of the investigation. What people do,not what they think or feel, is the object of the study. Likewise the behaviorist does not look to the mind or the brain to understandthe causes of abnormal behavior. He assumes that the behavior representscertain learned habits, and he attempts to determine how they are learned.
The material that is studied is always behavior. Because behavioristsare not interested in the mind, or its more rarified equivalents such as psycheand soul, inferences about the conditions that maintain and reinforce humanbehavior can be made from the study of animal behavior. Animal research hasprovided a very important foundation for the behavioral approach. Thebehavioral researcher is interested in understanding the mechanisms underlyingthe behavior of both normal individuals and those with problems that might bereferred as "mental illness". When the behavioral model is applied tomental illness, it tends to be used for a wide variety of presenting problems. It is perhaps most effective in treating behavioral disorders and disorders ofimpulse control, such as excessivedrinking, obesity, or sexual problems. Behavioral approaches may bequite useful in treatment of anxiety and have occasionally been helpful in themanagement of more severe mental disorders such as schizophrenia.

Early Theorists:

Pavlov (1849-1936)
Ivan P. Pavlov is Russia's most famous scientist. He first won greatdistinction for his research on the physiology of th digestive system. Pavlovencountered a methodological problem that was ultimately to prove moreimportant and more interesting than his physiological research. He haddiscovered "conditioning".
For Pavlov, all behavior was reflexive. But how do such behaviors differfrom the behavior commonly called "instinctive" ? Instinctivebehavior is sometimes said to be motivated. The animal has to be hungry, to besexually aroused, or to have nest-building hormones before these kinds ofinstinctive behavior can occur. But Pavlov concluded that there seems to be nobasis for distinguishing between reflexes and what has commonly been thought ofas non reflexive behavior. As a psychologist, Pavlov was concerned with thenervous system, and specifically the cerebral cortex, not with any lawfulnessthat he might find in behavior.
At a more abstract level, Pavlov thought that all learning, whether ofelicited responses in animals or of highly conceptual behaviors in humans, wasdue to the mechanisms of classical conditioning. We now believe it to be wrong,but it is none the less one of the great ideas of our culture. (Bolles)
Watson ( 1878-1958)
John B. Watson was one of the most colorful personalities in thehistory of psychology. Although he did not invent behaviorism, he became widelyknown as its chief spokesman and protagonist.
Watson was brought up in the prevalent tradition: Mechanism explains behavior. In a widely used textbook (Watson, 1914) he said that the study ofthe mind is the province of philosophy; it is the realm of speculation andendless word games. The mind has no place in psychology. A science ofpsychology must be based on objective phenomena and the ultimate explanationmust be found in the central nervous system.
It was Watson, more than Pavlov or any other one person, who convincedpsychologists that the real explanation of behavior lay in the nervous systemand that as soon as we understood the brain a little better, most of themysteries would disappear. And, it was mainly because of Watson that so manypsychologists came to believe that what they called conditioning was soimportant. (Bolles)
Skinner (1904-1990)
B. F. Skinner is considered by many authorities to have been thegreatest behavioral psychologist of all time.
Earlier behaviorism had been concerned with stimulus-responseconnections. Skinner looked at the learning process in the opposite way,investigating how learning was affected by stimuli presented after an act wasperformed. He found that certain stimuli caused the organism to repeat an actmore frequently. He called stimuli with this effect the "reinforcers". Watson found that by providing reinforcement in a systematic way one couldshape the behavior in desired directions. Link to operant
Teachers have benefited the most from Skinner's fundamental work inreinforcement as a means of controlling and motivating student behavior. Itsvarious applications to classroom practice are commonly called "behaviormodification", a technique that many teachers consider to be one of theirmost valuable tools for improving both learning and behavior of their students

Biological Psychology

We can thank Charles Darwin (1859) for demonstrating in the idea that genetics and evolution play a role in influencing human behavior through natural selection.

Theorists in the biological perspective who study behavioral genomics consider how genes affect behavior. Now that the human genome is mapped, perhaps, we will someday understand more precisely how behavior is affected by the DNA we inherit. Biological factors such as chromosomes, hormones and the brain all have a significant influence on human behavior, for example gender.

The biological approach believes that most behavior is inherited and has an adaptive (or evolutionary) function. For example, in the weeks immediately after the birth of a child, levels of testosterone in fathers drop by more than 30 per cent. This has an evolutionary function. Testosterone-deprived men are less likely to wander off in search of new mates to inseminate. They are also less aggressive, which is useful when there is a baby around.

Biological psychologists explain behaviors in neurological terms, i.e. the physiology and structure of the brain and how this influences behavior.  Many biological psychologists have concentrated on abnormal behavior and have tried to explain it.  For example, biological psychologists believe that schizophrenia is affected by levels of dopamine (a neurotransmitter).

These findings have helped psychiatry take off and help relieve the symptoms of the mental illness through drugs. However, Freud and other disciplines would argue that this just treats the symptoms and not the cause. This is where health psychologists take the finding that biological psychologists produce and look at the environmental factors that are involved to get a better picture.