Final answer:
The statement is true; a sense of self-continuity is an individual's understanding of being the same person over time despite changes. John Locke's psychological continuity approach and other theories like the continuity theory support this concept.
Step-by-step explanation:
A sense of self-continuity refers to an individual's understanding of oneself as the same person over time, despite undergoing various changes such as in appearance, size, or knowledge. This statement is true.
John Locke's perspective aligns with this concept, as he suggested that a person's identity is defined through consciousness and the ability to reflect upon memories, establishing psychological continuity. In his thought experiment involving a prince and a cobbler who swap memories, Locke illustrates that identity is not anchored in the physical body but in the mental experiences and memories that form an individual's sense of self.
Concepts like continuity theory and bundle theory further explore the notion of the self, suggesting that the elderly or any individual maintains consistency not through an immutable self, but by continuously shaping one's personality and relationships even into advanced age. Such theories highlight the dynamic and ever-changing nature of self-identity. David Hume also touched upon this idea by describing the self as a 'bundle or collection of different perceptions.'