Final answer:
A person with memory loss due to psychological causes is most likely to be diagnosed with dissociative amnesia, a disorder characterized by the inability to recall important autobiographical information typically resulting from severe stress or trauma. The correct option is d. dissociative amnesia.
Step-by-step explanation:
A person who experiences partial or complete memory loss due to psychological causes such as traumatic life-changing events is most likely to be diagnosed with dissociative amnesia. Dissociative amnesia is characterized by an inability to recall autobiographical information, often after a stressful or traumatic event, which cannot be attributed to ordinary forgetfulness.
Unlike other disorders such as borderline personality disorder, major depression, or schizophrenia, dissociative disorders are directly related to issues with memory and identity rather than mood, personality, or psychotic symptoms.
Amnesia can be in various forms, such as anterograde amnesia, where the individual cannot remember ongoing events after the inciting event, or retrograde amnesia, where they cannot recall past events leading up to the trauma. There are studies, like the case of K. C. who had severe episodic amnesia, which deepen our understanding of these conditions and can lead to effective treatments for memory disorders.