Complex sentence: The individual's emotional response subsequently leads to a behavioural response of Approach-Avoidance--approach refers to the act of physically moving towards something while avoidance interferes with people's ability to interact.
Split into simpler sentences: The individual's emotional response subsequently leads to a behavioural response of "Approach → Avoidance". Approach refers to the act of physically moving towards something while avoidance interferes with people's ability to interact.