The field of psychology that studies the biology of behavior and mental processes is

responses
1) cognitive psychology.
2) behaviorist psychology.
3) humanistic psychology.
4) psychobiology.

4) psychobiology.

SO IT'S NOT behaviorist psychology.

No, it is not behaviorist psychology. Behaviorist psychology focuses primarily on observable behavior and the environmental factors that influence it, rather than the biology underlying behavior and mental processes. Psychobiology, on the other hand, is the field of psychology that studies the biological basis of behavior and mental processes.

The field of psychology that studies the biology of behavior and mental processes is psychobiology.

The correct answer is option 4) psychobiology.

To determine the field of psychology that studies the biology of behavior and mental processes, we need to understand the definitions of the given options:

1) Cognitive psychology is a field of psychology that focuses on studying mental processes such as perception, thinking, memory, and problem-solving. While it does examine how the brain functions, it primarily focuses on the cognitive processes involved in behavior and mental processes rather than the biology of these processes.

2) Behaviorist psychology, also known as behaviorism, is a theoretical perspective in psychology that emphasizes the study of observable behaviors rather than mental processes. Though behaviorism does consider the relationship between behavior and the brain, it does not specifically delve into the biology of behavior and mental processes.

3) Humanistic psychology is a branch of psychology that emphasizes the inherent goodness and potential for personal growth in individuals. It focuses on subjective experiences, personal freedom, and self-determination. Similar to cognitive psychology and behaviorism, humanistic psychology does not specifically explore the biology of behavior and mental processes.

4) Psychobiology, also known as biological psychology or behavioral neuroscience, is the field of psychology that studies the relationship between behavior and brain processes. It investigates how biological factors such as genetics, hormones, and the nervous system influence behavior and mental processes. Psychobiology specifically focuses on the biological mechanisms underlying behavior and mental processes, making it the correct answer.

Hence, we can conclude that the field of psychology that studies the biology of behavior and mental processes is psychobiology.