The prefix 'auto-' means 'self,' as seen in 'automobile' (self-moving). In the word 'autodidact,' which combines 'auto-' with 'didact' (teacher/teaching), the term describes someone who:
- teaches others using innovative methods and self-developed educational techniques
- has learned skills or knowledge through self-instruction without formal teachers (correct answer)
- automatically remembers information without conscious effort or deliberate study
- prefers to work alone rather than in groups or collaborative learning environments
Explanation: When you encounter vocabulary questions involving prefixes, break down the word into its parts to understand the meaning. Here, you have 'auto-' (self) + 'didact' (teacher/teaching), so an autodidact literally means someone who is their own teacher. The correct answer is B because an autodidact is specifically someone who has acquired knowledge or skills through self-directed learning without formal instruction. They teach themselves by reading, experimenting, practicing, or using other independent methods rather than attending classes or working with traditional teachers. Let's examine why the other choices miss the mark. Choice A incorrectly suggests that autodidacts teach others - but the term describes how someone learns, not how they teach others. The focus is on being self-taught, not on teaching methodology. Choice C confuses autodidactic learning with automatic memory or photographic recall. Self-teaching requires deliberate effort and study; it's not about unconscious absorption of information. Choice D focuses on social preferences (working alone versus in groups), but this misses the point entirely. An autodidact could actually collaborate with others while still being primarily self-taught - the key is the absence of formal instruction, not social isolation. For ISEE vocabulary questions, always start by identifying familiar prefixes, suffixes, and root words. When you see 'auto-', immediately think 'self' - this appears in many English words like autonomous, autobiography, and automatic. Breaking words into their component parts will help you decode unfamiliar terms even when you haven't seen them before.