[Solved] The determination of the composition of a material by bombarding it with neutrons and monitoring the emitted radiation is neutron activation analysis. Latency Period: A phase in psychosexual development, occurring from about age six to puberty, characterized by a decrease in sexual interests and activities. Erotic Interest: A term reflecting the degree of sexual or romantic attraction one feels towards others, which can vary over time and context. Play: Engaging in activities for enjoyment and recreation rather than a serious or practical purpose, characteristic of both humans and animals. Persona: The aspect of someone's character that is presented to or perceived by others, often tailored to the specific audience or context.