Answer:
According to social penetration theory, relationships deteriorate because of a decrease in intimacy and a loss of self-disclosure as the relationship progresses. This theory suggests that as individuals become more familiar with each other, they are more likely to reveal their innermost thoughts, feelings, and desires, creating a deeper level of intimacy. However, as the relationship continues, the individuals may become more guarded, leading to a decrease in self-disclosure and a reduction in intimacy. This process of deterioration is often referred to as the "saturation effect."
Social exchange theory explains relationship deterioration as a result of a perceived imbalance of costs and rewards. When individuals are in a relationship, they both contribute time, energy, and resources, expecting a return in the form of rewards such as affection, companionship, or support. However, if one person begins to feel that the costs they are incurring outweigh the rewards they are receiving, they are likely to withdraw from the relationship. Over time, the continued imbalance of costs and rewards can lead to a breakdown in the relationship, and it may eventually dissolve.
In conclusion, the deterioration of relationships can occur through both social penetration theory and social exchange theory. Through social penetration theory, relationships deteriorate as intimacy decreases and self-disclosure decreases. Through social exchange theory, relationships deteriorate as a result of an imbalance of costs and rewards.