frames of opposition
Opposition is another early relational frame. In natural language use, this kind of relational responding involves an abstracted dimension along which events can be ordered and distinguished in equal ways from a reference point. Along the verbally abstracted dimension of temperature, for example, cool is the opposite of warm, and cold is the opposite of hot. The specific relational frame of opposition typically (but not necessarily) implicates the relevant dimension (e.g., "pretty is the opposite of ugly" is relevant to appearance). Opposition should normally emerge after coordination because the combinatorially entailed relation in frames of opposition includes frames of coordination (e.g., if hot is the opposite of freezing and cold is the opposite of hot, then cold is the same as freezing).