Effective memorization techniques for UPSC aspirants include methods such as spaced repetition, which enhances retention by revisiting information at intervals. Utilizing mnemonic devices aids in creating mental associations, while chunking breaks down complex information into smaller, manageable parts. Creating visual aids like diagrams and flashcards can also facilitate quicker recall. Additionally, practicing retrieval through self-quizzing can reinforce memory. Aspirants should consider combining these techniques to cater to their personal learning styles, as diversification enhances overall engagement and helps retain crucial information essential for exam preparation.