Final answer:
John Locke believes that personal identity cannot be based on the persistence of an immaterial soul. According to Locke, personal identity is determined by psychological continuity, which involves our memories and reflection upon them.
Step-by-step explanation:
John Locke does not think that personal identity can consist in the persistence of an immaterial soul. Locke's approach to personal identity is based on psychological continuity, which refers to our memories and ability to reflect upon them. According to Locke, what individuates us cannot be the body or the biological, but rather the continuity of consciousness.