Final answer:
Cognitive psychologists focus on human thinking and are interested in problem solving, concept formation, and language processes, but not instincts, which fall under biological psychology.
Step-by-step explanation:
Cognitive psychologists would be interested in all the following EXCEPT instincts. Cognitive psychology is the branch of psychology that focuses on the study of human thinking. It includes topics such as problem solving, concept formation, and language processes. Instincts, on the other hand, are typically considered part of evolutionary and biological psychology rather than cognitive psychology. Cognitive psychologists examine how people think, process, and remember information. They are also involved in understanding how we use language, develop intelligence, and solve complex problems.