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Emotion theories matter because they answer a hard question: does the bodily reaction cause the emotion, or does the emotion cause the bodily reaction? Three classic theories give three different answers to this ordering problem. For example, imagine a person suddenly encountering a growling dog: do they feel afraid because they are trembling, or does the trembling happen alongside the fear? In practice, exam questions test candidates on getting this ORDER right for each named theory, not just recalling that body and emotion are linked.

The James-Lange theory proposes the bodily change happens first, and the emotion is simply the brain's perception of that bodily change, e.g. we feel afraid because we notice we are trembling and our heart is racing. The Cannon-Bard theory proposes the bodily arousal and the emotional feeling happen simultaneously and independently, both triggered directly by the thalamusA deep brain structure that relays and filters sensory information on its way to the cortex.Read more →, e.g. seeing the dog produces a racing heart and fear at the same moment, neither one causing the other. The Schachter-Singer two-factor theory proposes emotion needs two ingredients together: physiological arousal (the bodily activation) plus a cognitive label, the mind's interpretation of why that arousal is happening. For example, imagine two patients with identical physical panic symptoms, one interprets them as a heart attack (panic disorder), while the other correctly attributes them to caffeine, the SAME arousal, a different cognitive label. In practice, this means the two-factor theory underpins cognitive models of panic disorder, where misinterpreting normal arousal as dangerous is what produces the panic itself.

• A theorist argued that emotion depends on how a person evaluates whether an event threatens them and whether they can cope with it. Whose account is this?
• Volunteers holding a pen between their teeth, forcing a smile-like posture, rate cartoons as funnier than those holding it with their lips. Which hypothesis does this support?
• A neuroscientist describes a rapid subcortical route carrying threat information to the amygdalaA brain structure central to processing fear and emotional reactions.Read more → before the cortex has fully processed it. What is this route usually called?
• A researcher photographs facial expressions and finds people in widely separated cultures identify the same small set of emotions. Which researcher is most associated with this work?

• James-Lange theory, bodily change occurs first and emotion is merely its perception, unlike Cannon-Bard, where arousal and emotion occur simultaneously and independently.
• Cannon-Bard theory, arousal and emotion fire together from the thalamusA deep brain structure that relays and filters sensory information on its way to the cortex.Read more →, whereas Schachter-Singer requires arousal PLUS a cognitive label before an emotion registers.
• Schachter-Singer two-factor theory, the same arousal can be labelled as different emotions depending on context, rather than James-Lange's fixed body-to-emotion sequence.
• Emotion theories generally, explain the ORDER of body and feeling, unlike cognitive appraisal theories (e.g. Lazarus), which emphasise the meaning assigned to a situation over raw arousal.

• That theorist co-authored the simultaneous-arousal account instead.
• That visual pathway processes spatial location rather than threat.
• That theorist placed bodily change before the felt emotion.
• That theorist argued arousal and feeling arise simultaneously.
• That theorist required a cognitive label added to existing arousal.

• Name the learning, social or research principle being tested before reading the options.
• Identify the antecedent, behaviour, consequence or cognitive process in the vignette.
• Compare the direction of effect with the nearest competing principle.
• Apply the same rule to a new example to confirm that the answer transfers.