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One relevant academic paper that evaluates an LLM-based chatbot is a study on AI chatbots for mental health support published in the Journal of Artificial Intelligence and Autonomous Intelligence .(DOI:  10.54364/JAIAI.2024.1105 ) The paper investigates the effectiveness of a chatbot designed as a mental health coach . The evaluation was conducted using a User Experience Questionnaire (UEQ) , which measures dimensions such as efficiency, dependability, stimulation, and novelty. The results show that users found the chatbot engaging and helpful, particularly in providing motivational and supportive responses. However, slightly lower scores in efficiency and dependability indicate limitations in maintaining consistent conversational flow . I selected this paper for three main reasons. First, it clearly involves a large language model-based chatbot in a specific context (mental health support) , which aligns with the assignment requirements. Second, the paper includes a substantive ev...

Dark patterns are interface design strategies that manipulate users into making decisions that benefit the company rather than the user. These patterns reduce transparency and limit users’ ability to make informed choices. Two common examples are hidden costs and difficult subscription cancellation. Example 1: Hidden Delivery Fees Many food delivery applications such as Foodpanda display food prices when users browse restaurant menus, but additional costs such as delivery fees, service fees, or small-order fees only appear at the final checkout stage. This design is considered a dark pattern known as Hidden Costs . Users may spend time browsing menus and selecting items while believing the total price is lower than it actually is. When the additional charges appear at checkout, users may still proceed with the order because they have already invested time in the process. A more ethical design would clearly display all expected costs earlier in the ordering process . For example, the ap...