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Infant positive and negative affect across the SFP-R in the full sample (N = 93). Notes: P = play, SF1 = first still-face, R1 = first reunion, SF2 = second still-face, R2 = second reunion. Replicating previous research, infants exhibited increased negative affect in still-face relative to non-still-face episodes and increased positive affect in reunion relative to still-face episodes
