Find over 25,000 psychological definitions


 is a neurotransmitterfoundin the brain, where it is crucial for the regulation of memory (lossof acetylcholine has been implicated in Alzheimer’sdisease) and in the peripheral nervous system, where it activates the actions ofmuscles.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

September 28th 2021

cross sectional study

a research design based on selecting representative groupswho vary on a particular characteristic; when thecharacteristic is age, this design provides a means ofmaking developmental comparisons.