Affective Relating to emotion, moods and feelings.
Aim The aim of a piece of research is what is intended to be investigated.
American Psychological Association (APA) The organization that represents psychology in the United States. The APA aims to advance psychology as both a profession and a science.
Amygdala An almond-shaped structure located near the front of the brain which is involved in emotion and memory, particularly in attaching emotional significance to information.
Analysis of variance A statistical test which compares the means of different conditions, looking for differences between them (abbreviated to ANOVA).
Anecdote A short account about an incident or person, which can be hearsay or considered to be unreliable.
Anomaly Something that deviates from what is standard, normal or expected.
Apparatus Equipment needed for an investigation (e.g. a computer).
Artificial intelligence The development of computers to do tasks that are considered to require intelligence.
Attrition The process of being gradually worn down.
Average A usual or ordinary amount (the different calculations of the average are the mean, median and mode).
Between-participants (unrelated or independent-groups) design When participants are allocated to different conditions (cf within-participants design).
Brain-imaging techniques Techniques used to produce pictures of the brain, such as magnetic resonance imaging.
Brain-scanning When scanning equipment is used to produce images of the brain (e.g. magnetic resonance imaging).
Brainstorming Producing an idea or solution by thinking about or discussing it intensively (e.g. by having a group discussion).
British Psychological Society (BPS) The organization which represents