Checkpoints Are Not Enough: Trust Calibration in CoSLR, a Human-AI System for Systematic Literature Reviews
Organizations: Tampere University, Tampere, Finland
Abstract
Systematic Literature Reviews (SLRs) are essential for evidence-based research but remain time-consuming, requiring researchers to manage large volumes of publications across planning, screening, analysis, and reporting. Large language models (LLMs) can now produce fluent, well-structured review text, which makes it difficult to distinguish synthesis that was verified by a researcher from synthesis that merely appears authoritative. This raises the risk that unverified AI-generated synthesis enters the scholarly record carrying the credibility of a systematic review. We present CoSLR, a Human-AI collaborative multi-agent system that supports the SLR workflow through a modular three-phase pipeline using large language models and Retrieval-Augmented Generation (RAG), and that places explicit, mandatory human checkpoints on the path between generated output and its acceptance. In a survey-based study with 63 participants, the system was received positively: 27 of 63 participants (42.9 percent) rated its usability highly, indicating that the mandatory checkpoints did not come at the cost of a workable interface. However, a checkpoint safeguards the review only if researchers use it to verify: 22 of 63 participants (34.9 percent) reported that they would trust AI-generated summaries and reports without additional human checking after only a short interaction with the system. These findings indicate that Human-AI collaboration can support literature review work, but that the effectiveness of human oversight depends on whether users are willing to exercise it. This is a calibration problem that interface design must address directly, not assume.
Figures & tables
| Study / Tool | Automation Focus | Techniques Used | Main Limitation |
|---|---|---|---|
| Abstrackr ( Wallace et al., 2010 ) | Title and abstract screening | Supervised machine learning with user feedback | Requires substantial manual labeling and offers limited explainability. |
| ASReview ( van de Schoot et al., 2021 ) | Screening prioritization | Active learning with text-based ranking | Automates mainly one phase of the review workflow. |
| Rayyan ( Ouzzani et al., 2016 ) | Collaborative screening support | Workflow management and relevance filtering | Primarily a decision-support platform rather than full automation. |
| DistillerSR ( Hamel et al., 2020 ) | Review workflow management | Machine learning-assisted prioritization | Depends on human review for final decisions. |
| RobotReviewer ( Marshall et al., 2016 ) | Risk-of-bias assessment and extraction | NLP and machine learning | Strongly domain-specific to biomedical evidence synthesis. |
| EPPI-Reviewer ( Thomas et al., 2023 ) | Screening and review management | Automation-supported review workflow tools | Limited end-to-end intelligence across the full review lifecycle. |
| Section | Focus / Measured Dimension | No. of Questions | Question Type |
|---|---|---|---|
| Demographic Information | Captures participant role, document usage frequency, explored content, and usage setting. | 4 | Categorical / multiple choice |
| Usability and Interaction | Evaluates support for defining research objectives and questions, generating search strings, screening articles, report generation, and question-answering interaction. | 10 | Likert-scale / binary |
| Cognitive Load & User Experience | Measures mental demand, uncertainty during use, and whether the system reduces technical handling effort. | 3 | Likert-scale |
| Learning & Retention | Assesses perceived support for understanding material, identifying key concepts, and improving confidence in discussing or applying content. | 3 | Likert-scale |
| Productivity and Workflow | Evaluates perceived accuracy, usefulness of summaries, efficiency, time savings, retrieval breadth, risk of missing studies, and preferred level of manual intervention. | 8 | Likert-scale / categorical |
| Recommendation & Concerns | Captures adoption intention, preference over traditional approaches, and privacy, security, or ethical concerns. | 3 | Likert-scale / binary |
| Response Excerpt | Initial Code |
|---|---|
| “Add more data sources like IEEE” | More data sources |
| “Search string need to be more precise” | Query precision |
| “The created report properly cited the papers” | Citation traceability |
| “Would like a few more and clearer checkpoints” | Manual checkpoints |
| Code Group | Example Codes | Related Theme |
|---|---|---|
| Planning support | RQ generation, objective formulation, search query generation | Support for RQs and search formulation |
| Synthesis support | report generation, data extraction, structured output, summaries | Report generation and synthesis support |
| Retrieval limitations | more data sources, query precision, missing papers, direct PDF access | Retrieval quality and coverage |
| Evidence transparency | citation traceability, source visibility, seeing analyzed papers | Transparency and evidence traceability |
| User control | manual checkpoints, workflow separation, validation control, context access issues | Workflow control and manual checkpoints |
| Dimension | Representative items | Avg. Mean |
|---|---|---|
| Usability | Q&A interaction, report generation, responsiveness, objective/RQ framing, data extraction | 3.78 |
| Learning support | Understanding material, key concepts, confidence in applying content | 3.68 |
| Productivity | Answer accuracy, report summaries, comprehension support | 3.68 |
| Trust & oversight | Trust in generated outputs without human checking | 3.02 |
| Item | Mean | Var. | SD |
|---|---|---|---|
| Ease of Q&A interaction | 3.62 | 0.79 | 0.89 |
| Report generation intuitiveness | 3.71 | 0.66 | 0.81 |
| Responsiveness / speed | 3.90 | 0.80 | 0.89 |
| Relevance / accuracy of answers | 3.57 | 0.80 | 0.89 |
| Trust without human checking | 3.02 | 1.24 | 1.11 |
| Theme | Description | Implication |
|---|---|---|
| Support for research question and search formulation | Participants valued the system’s ability to generate research questions, objectives, and search strings. | Indicates perceived usefulness in the planning stage of the SLR workflow. |
| Report generation and synthesis support | Users appreciated automated synthesis, report generation, and data extraction features. | Suggests that the system is especially valuable for analysis and structured reporting. |
| Retrieval quality and coverage | Participants requested broader database integration and more precise search strings. | Highlights retrieval as a key limitation and a priority for future improvement. |
| Transparency and evidence traceability | Users wanted clearer links between generated outputs and the papers used as evidence. | Reinforces the importance of evidence grounding and explainability in Human–AI systems. |
| Workflow control and manual checkpoints | Several responses emphasized the need for stronger workflow control and manual validation. | Supports the value of human-in-the-loop design rather than full black-box automation. |