Effectiveness of AI Chatbots in Improving Students' General Wellbeing

NCT ID: NCT06965439

Last Updated: 2025-05-11

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 172 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-08-01
• Study Completion Date: 2025-10-31

Brief Summary

The goal of this randomised controlled trial is to evaluate the effectiveness of an AI mental health chatbot in promoting emotional wellbeing and perceived empathy among university students in Singapore with mild or subclinical symptoms of anxiety and depression. The main questions it aims to answer are:

Can the chatbot provide emotional validation and be perceived as empathic?

Does the chatbot reduce symptoms of anxiety and depression and improve wellbeing more than an inactive control condition?

Researchers will compare students who engage in four sessions with the chatbot to students who complete four neutral writing tasks to assess differences in emotional wellbeing, empathy, and resilience.

Participants will:

Complete baseline wellbeing assessments

Be randomised to:

Four 20-minute chatbot sessions providing personalised support using cognitive-behavioural and compassion-focused techniques (intervention group), or

Four 20-minute neutral writing sessions unrelated to mental health (control group)

Complete post-session and follow-up wellbeing questionnaires

All sessions are conducted virtually over Zoom. Participants are full-time students at the National University of Singapore, aged 21 and above. The study aims to inform future development of AI tools for emotional support in non-clinical settings.

Detailed Description

This randomised controlled trial evaluates the effectiveness of an AI-based mental health chatbot in promoting emotional wellbeing among university students in Singapore. The chatbot, part of the existing Intellect app used by the National University of Singapore (NUS), delivers supportive conversations grounded in cognitive-behavioural and compassion-focused techniques.

A total of 172 NUS students (aged 21+) will be screened for eligibility. Those with moderate to severe anxiety or depression (GAD-7 or PHQ-9 ≥10), current mental health treatment, or history of self-harm will be excluded and provided with mental health resources. Eligible participants will be randomly assigned to either:

Intervention group: Four 20-minute chatbot sessions over four weeks, delivered via Zoom. The chatbot explores participants' challenges, promotes emotional insight, identifies unhelpful thinking patterns and behaviours, and offers weekly reflection homework.

Control group: Four 20-minute neutral writing tasks (non-mental-health topics) over four weeks, matched in format and timing.

All participants complete self-report wellbeing questionnaires before and after each session, and a one-month follow-up. Primary outcomes include changes in anxiety (GAD-7), depression (PHQ-9), wellbeing (WHO-5), affect (PANAS), resilience (BRS), and perceived empathy (PEQ). The chatbot's perceived empathy will be assessed after session 1 and session 4 in the intervention group.

Sessions are not audio- or video-recorded, and participant anonymity is preserved. Researchers monitor sessions via video to ensure safety. At follow-up, control participants will be offered access to the chatbot if it proves effective.

This study aims to assess feasibility, empathy, and clinical impact of chatbot-delivered support, contributing to the development of scalable digital tools for emotional wellbeing in non-clinical university settings.

Conditions

Control Condition; Intervention

Study Design

• Allocation Method: NA
• Intervention Model: FACTORIAL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

AI-delivered emotional wellbeing support

Participants in this arm will complete four sessions with an AI-powered mental health chatbot over four weeks. Each session will last approximately 20 minutes and take place via Zoom. The chatbot provides structured emotional support informed by CBT principles, including identifying unhelpful thinking patterns and coping behaviours, delivering thought restructuring and compassion-focused techniques, and assigning weekly reflection-based homework. The intervention is designed to promote emotional wellbeing and alleviate mild anxiety and depressive symptoms.

Group Type: EXPERIMENTAL

AI-delivered emotional wellbeing support

Intervention Type: BEHAVIORAL

Participants in this arm will complete four 20-minute sessions with an AI-powered chatbot designed to deliver CBT-based emotional wellbeing support. The chatbot provides conversational guidance using techniques such as cognitive restructuring, behavioural activation, and emotion validation. Sessions are delivered via Zoom, and participants receive structured homework after each session to reinforce learning. The chatbot was not custom-built for this study but is an existing tool provided to NUS students as part of their digital mental health benefits.

Inactive control (neutral writing tasks)

Participants in this arm will complete four 20-minute sessions over four weeks involving neutral writing tasks unrelated to mental health. Writing prompts cover non-emotive topics (e.g., daily routines, neutral observations) and do not include emotional support, feedback, or guidance. This arm serves as an inactive control condition to isolate the effect of the chatbot intervention on emotional wellbeing and perceived empathy.

Group Type: PLACEBO_COMPARATOR

Neutral writing tasks

Intervention Type: OTHER

Participants in this arm will complete four 20-minute sessions of neutral writing tasks unrelated to mental health. Prompts include writing factually about daily routines or describing an object in detail. The content is emotionally neutral to act as a comparison for the chatbot intervention. Sessions are conducted online via Zoom.

Interventions

AI-delivered emotional wellbeing support

Participants in this arm will complete four 20-minute sessions with an AI-powered chatbot designed to deliver CBT-based emotional wellbeing support. The chatbot provides conversational guidance using techniques such as cognitive restructuring, behavioural activation, and emotion validation. Sessions are delivered via Zoom, and participants receive structured homework after each session to reinforce learning. The chatbot was not custom-built for this study but is an existing tool provided to NUS students as part of their digital mental health benefits.

Intervention Type: BEHAVIORAL

Neutral writing tasks

Participants in this arm will complete four 20-minute sessions of neutral writing tasks unrelated to mental health. Prompts include writing factually about daily routines or describing an object in detail. The content is emotionally neutral to act as a comparison for the chatbot intervention. Sessions are conducted online via Zoom.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

Current undergraduate student at the National University of Singapore (NUS)

Aged 21 years and above

Proficient in English

Not currently undergoing psychological treatment or taking psychiatric medication

No history of self-harm or suicide

Scores below 10 on both the GAD-7 and PHQ-9 (i.e., subclinical levels of anxiety and depression)

Exclusion Criteria

Currently undergoing psychological treatment or counselling

Currently taking psychiatric medication

History of self-harm or suicidal ideation

Scores ≥10 on the GAD-7 and/or PHQ-9, indicating moderate to severe anxiety or depression

Inability to provide informed consent or comply with study procedures

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

National University of Singapore

OTHER

Sponsor Role: lead

Responsible Party

Dr Oliver Suendermann

Ph.D.

Responsibility Role: PRINCIPAL_INVESTIGATOR

Central Contacts

Pak (Martin) Hei Ng, Trainee Clinical Psychologist

Role: CONTACT

e1350419@u.nus.edu

‪+65 9616 0572‬

Other Identifiers

NUS-IRB-2024-930

Identifier Type: -

Identifier Source: org_study_id