{
  "experimentName": "Ball Comparison Example",
  "description": "Participants compare the apparent size of two circles.",
  "paperDOI": "https://doi.org/10.0000/coggym.example",
  "taskType": [
    "Visual Perception"
  ],
  "responseType": [
    "multi-choice"
  ],
  "contributors": [
    "CogGym Documentation Team"
  ],
  "paper-title": "A Demonstration of Build-time Trial Expansion",
  "citation": "CogGym Documentation Team (2026). A Demonstration of Build-time Trial Expansion.",
  "year": 2026,
  "authors": [
    "CogGym Documentation Team"
  ],
  "alias": "ball-comparison-build-example",
  "trial_presentation": "independent",
  "metadata": {
    "authoring_format": "eml-v1.5-trial-units"
  },
  "stimuli_count": 3,
  "trial_layout_config": {
    "layout": "2-columns",
    "default_width": [
      "45%",
      "45%"
    ]
  },
  "experimentFlow": [
    {
      "sequences": [
        {
          "seq_id": "seq_forward",
          "blocks": [
            [
              "instruction_01"
            ],
            [
              "trial_1_base",
              "trial_1_variant_1",
              "trial_1_variant_2"
            ]
          ]
        },
        {
          "seq_id": "seq_reverse",
          "blocks": [
            [
              "instruction_01"
            ],
            [
              "trial_1_variant_2",
              "trial_1_variant_1",
              "trial_1_base"
            ]
          ]
        }
      ],
      "condition": "all_variants"
    }
  ]
}