Which is More Important, Proposer Identity or Allocation Motive? Event-Related Potential in Economic Decision-Making

Figures & data

Figure 1 A single trial of the experimental procedure.

Table 1 ANOVA Results with Main Effect and Interaction for Rejection Rate in the Behavioral Analysis, Showing F Criteria (F), p-value (p), and Partial Effect Size (η_p²)

Factors	F	p	ηp^2
Proposer identity	0.23	0.63	<0.01
Allocation motive	1.08	0.30	0.01
Offer type	536.3	< 0.001	0.84
Offer type × proposer identity	8.12	0.005	0.10
Offer type × allocation motive	7.64	0.007	0.09
Offer type × allocation motive × proposer identity	4.61	0.03	0.06

Figure 2 Rejection rate of unfair offers and fair offers in different conditions. Error bars represent standard deviation, **p<0.01.

Figure 3 Event-related potential waveform average for fair offer(A) and unfair offer (B) interactions at different electrode points. The 250–350 ms and 360–380 ms time windows were for calculating the mean amplitudes of the FRN and P300.

Figure 4 Scatter chart of FRN mean amplitudes for different experimental conditions at Fz, FCz, Cz.

Figure 5 Scatter chart of P300 mean amplitudes for different experimental conditions at Fz, FCz, Cz.