What is the difference between psychology and neuroscience?
In psychology the human mind is studied. Mostly how the human mind normally performs.
In neuroscience the central nervous system (the brain) is studied.
Basic neuroscience often involves rats and mice to understand how neurons (what the brain is made up of) function.
Cognitive psychology is study of cognitive functions of the brain.
Cognitive neuroscience is an emerging field since about the last decade of the 20st century and is concerned with the neuronal origins of cognitive functions and dysfunctions.