Final answer:
The belief that focusing exclusively on a partner's needs will lead to happiness is contested by research which emphasizes the importance of mutual respect and balance in a relationship.
Step-by-step explanation:
The assertion that Van Epp believes focusing exclusively on your partner's needs will lead to happiness is not supported by the references provided. The essence of happiness in relationships is often found in the balance between self-interest and consideration for the other person. Focusing solely on a partner's needs without regard for one's own can lead to an unbalanced relationship and potentially to one's own unhappiness.
Research suggests that factors such as mutual respect, a sense of partnership (LibreTexts), and positive relationships contribute greatly to well-being (Ryff & Singer, 2009; Markus et al., 2004). Disproportionately concentrating on your partner's desires at the expense of your own can be emotionally draining and counterproductive to personal fulfillment, which is a vital component of a healthy relationship. The examples provided indicate the importance of mutual satisfaction and respect in a partnership for long-term happiness and well-being.