


It is based on supported judgment and fact-finding. Psychologists attempt to understand people not only by thinking about them but also by learning about them through careful, controlled observation and rigorous analysis. Science is not merely a collection of facts but is knowledge gathered and organized through the application of what is called the scientific method. It is considered a science because science is a body of knowledge held together and build meaningful by common principles and laws. If we examine this definition very closely, the three terms science, behavior, and mental processes are clearly evident as important concepts which need further explanation. Psychology’s concern, both with observable behavior and inner thoughts and feelings made psychology “ the science of behavior and mental processes”. In the 1960s, psychology has begun to recapture its initial interest in mental processes through studies on how our minds process and retain information as to how we perceive, think and remember. Studying overt behavior of both animal and human beings including children, old, normal, and abnormal.Science is rooted in observation, and because of the emphasis on the precise measurement of overt behavior, Watson called a new school of thought, founded on his principle “Behaviorism”. According to Watson, we can not observe a sensation, feeling, or thought but we can observe people behavior’s as they respond to different situations. Watson diminished introspection as a method of psychology, instead argued in the favor of objective observation, and redefined it as the “science of observable behavior”.
