The stimuli are movie clips inducing emotions. Ideally, if this measure allowed for quantification and integration with other physiological signals. I would ambrace any suggestion you have. The ideas I have already generated (some of them quite crazy) include the measurement of:
1. LEANING-FORWARD and LEANING-BACK by means of:
a) head accelerometry
b) motion capture
c) tracking the point of body balance, e.g. placing participants on a wii balance
d) recording a video of the posture and a software body movement tracking
2. EMG:
a) recording facial muscles related to fear and disgust (avoid) and pleasure or anger (approach)
3. SELF-REPORT:
a) participants use a rating dial to report their motivation continously
I am very curious what you think about these ideas and what other methods are available.
Lukasz, you might take a look at the following publication:
TREHUB, A. (1959). Ego disjunction and psychopathology. *Journal of Abnormal Psychology*.
It uses the Edwards Personal Preference Test to determine the degree of approach-avoidance conflict (ego disjunction).
Lukasz, all your ideas are good, save 1d which is not reliable because of the spatial and temporal resolution it has.
As to 1:
http://www.biomedcentral.com/1471-2202/8/83
As to 2 and 3: http://revistas.ucm.es/index.php/SJOP/article/view/SJOP0808120016A/28768
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