<P> Through observational learning, individual behaviors can spread across a culture through a process called diffusion chain . This basically occurs when an individual first learns a behavior by observing another individual and that individual serves as a model through whom other individuals learn the behavior, and so on . </P> <P> Culture plays a role in whether observational learning is the dominant learning style in a person or community . Some cultures expect children to actively participate in their communities and are therefore exposed to different trades and roles on a daily basis . This exposure allows children to observe and learn the different skills and practices that are valued in their communities . </P> <P> Albert Bandura, who is known for the classic Bobo doll experiment, identified this basic form of learning in 1961 . The importance of observational learning lies in helping individuals, especially children, acquire new responses by observing others' behavior . </P> <P> Albert Bandura states that people's behavior could be determined by their environment . Observational learning occurs through observing negative and positive behaviors . Bandura believes in reciprocal determinism in which the environment can influence people's behavior and vice versa . For instance, the Bobo doll experiment shows that model, in a determined environment, affects children's behavior . In this experiment Bandura demonstrates that one group of children placed in an aggressive environment would act the same way, while the control group and the other group of children placed in a passive role model environment hardly shows any type of aggression . </P>

Name the psychologist who greatly contributed to our understanding of observational learning