Psychologists provide therapy to individuals, professional guidance to individuals or groups

5. Community psychology 
Community psychologists perform research on health issues to educate the community and 
create programs that help prevent issues from occurring. Community psychologists are found in 
schools, community organizations, charities and government agencies. One main focus of 
community psychology is the improvement of the community and the people who live within it. 
6. Comparative psychology 
Comparative psychology looks at the similarities and differences between the behavior of 
humans and that of their animal counterparts. Those who work in comparative psychology may 

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observe how animals behave and respond to certain situations or stimuli, using those results to 
better understand human behavior. 
7. Consumer psychology 
Consumer or marketing psychology is the study of consumer behavior. Consumer psychology 
can help organizations identify their target audience, what influences their purchasing behavior, 
how they make purchasing decisions and what their attitude about a particular product or service 
is. Consumer psychologists conduct market research surveys, form focus groups and observe 
consumers. 
8. Critical psychology 
Critical psychology is the study of the discipline itself. Critical psychologists look at how the 
practice of psychology is changing and evolving over the natural course of time and seek to 
identify any associated trends that might be beneficial to the field. 
9. Developmental psychology 
Developmental psychology concentrates on the human lifespan and the behaviors, languages and 
disabilities that may be present at various stages of life. While some developmental 
psychologists may focus on a specific life stage, such as childhood or adolescence, others will 
study the entire lifespan. Developmental psychologists do many tasks, from diagnosing 
developmental delays in children to researching aging issues.