Sentence:  In contrast, <WSD>heterotropic</WSD> intentional mental states, intentional acts and actions cannot be performed and experienced by a single individual: <WSD>heterotropic</WSD> states, acts and actions necessarily refer to and depend on other individuals, i.e. they involve at least two individuals. 
Meaning of the word marked with <WSD> tags:  Arising from the interaction of separate people or entities.