{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp03_full320_20260801","cell_id":"negative_space_design__cognitive_science","trajectory_id":"R","attempt_index":0,"archetype_slug":"negative_space_design","domain_slug":"cognitive_science","decision":"CANDIDATE","problem_id":"continuous_trial_stream_carryover_confounding","causal_lever_id":"protected_inter_trial_blank_interval","proposal":{"problem":"In rapid cognitive experiments, trials and instructions may arrive with no protected perceptual pause, so processing of the preceding event competes with the next event and contaminates measures intended to represent distinct trials.","actors_substrate":["human research participants","cognitive-science investigators","computerized experiment protocols","stimulus and response-event streams"],"observable_state":"Errors, response times, or reported interpretations depend on preceding-trial density or position in an uninterrupted block, with participants showing missed transitions, premature responses, or requests for repeated instructions.","consequence":"Measurements may conflate the target cognitive process with residual processing, attentional capture, or uncertainty about whether one trial ended and another began.","affected_objective":"Improve separation and interpretability of trial-level cognitive measurements without removing necessary task information.","structural_mapping":[{"archetype_element":"Competing elements crowd the field","domain_realization":"The preceding stimulus, feedback, controls, and next stimulus compete within one short processing window.","claim_kind":"HYPOTHESIS"},{"archetype_element":"Protected absence","domain_realization":"A bounded, visibly intentional inter-trial blank or low-information interval prevents new task content from occupying the transition.","claim_kind":"INFERENCE"},{"archetype_element":"Positive form clarified by absence","domain_realization":"The pause marks the preceding trial as complete and isolates the onset of the next trial.","claim_kind":"INFERENCE"},{"archetype_element":"Meaningful rather than accidental emptiness","domain_realization":"A minimal fixation or transition cue distinguishes deliberate waiting from loading failure or experiment termination.","claim_kind":"INFERENCE"},{"archetype_element":"Reintroduction after rest","domain_realization":"The next trial appears after a prespecified or randomized bounded interval, with safety and exit controls continuously recoverable.","claim_kind":"HYPOTHESIS"},{"archetype_element":"Effect validated by audience response","domain_realization":"Carryover-sensitive behavior and transition comprehension are compared across interval conditions.","claim_kind":"INFERENCE"}],"component_map":[{"component":"Omission Candidate","status":"direct","domain_realization":"Remove feedback ornament, redundant prompts, and premature presentation of the next stimulus during transitions."},{"component":"Protected Empty Space","status":"direct","domain_realization":"Reserve an inter-trial interval in which no task-bearing stimulus may appear."},{"component":"Positive Form Relationship","status":"direct","domain_realization":"Use the interval to separate the completed trial from the onset whose response is measured next."},{"component":"Attention Competition Map","status":"direct","domain_realization":"Inventory preceding stimulus remnants, feedback, cursor cues, controls, and upcoming content that can capture attention."},{"component":"Absence Boundary","status":"direct","domain_realization":"Specify interval onset, duration range, permissible fixation cue, and prohibited content."},{"component":"Clarity or Effect Test","status":"direct","domain_realization":"Test transition comprehension and whether preceding-trial effects on the next response decline."},{"component":"Rest and Pacing Zone","status":"direct","domain_realization":"Place the quiet interval at genuine trial or block boundaries rather than arbitrarily inside a response episode."},{"component":"Meaning-of-Absence Check","status":"direct","domain_realization":"Verify that participants distinguish an intentional interval from freezing, failure, completion, or missing permission."},{"component":"Reintroduction Trigger","status":"direct","domain_realization":"Resume with the next trial after the bounded timer or an explicitly permitted participant-paced continuation."},{"component":"Accessibility and Recoverability Guardrail","status":"direct","domain_realization":"Retain readable fixation, pause/withdrawal access, assistive compatibility, and recoverable instructions."},{"component":"Context Preservation Frame","status":"direct","domain_realization":"Keep task identity, progress, required warnings, and response conventions available without adding competing trial content."}],"mechanism_dispositions":[{"slug":"architectural_void","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Its figure-ground idea is suggestive, but built-volume movement and light do not operate in the experimental event stream.","counterfactual_removal":"Removing it does not change the proposed causal chain or test."},{"slug":"blank_or_rest_frame","disposition":"selected_load_bearing","contribution_type":"CORE_CAUSAL","adaptation_or_rejection":"Adapted as an intentional, bounded inter-trial frame placed at a real event boundary.","counterfactual_removal":"Without the quiet interval, the next stimulus again overlaps the preceding processing window."},{"slug":"editorial_cut","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Used to remove transition content only after preserving instructions, evidence, and recoverable materials.","counterfactual_removal":"The interval could remain, but redundant feedback or prompts might continue to occupy it."},{"slug":"empty_state_design","disposition":"selected_supporting","contribution_type":"SAFETY_GUARDRAIL","adaptation_or_rejection":"A minimal cue identifies the blank as an intentional between-trial state rather than failure.","counterfactual_removal":"Participants could misread the pause, threatening comprehension and data validity, though temporal separation would still exist."},{"slug":"facilitation_silence","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"The proposal concerns computerized stimulus timing, not withholding speech to redistribute group participation.","counterfactual_removal":"No material change occurs."},{"slug":"focus_mode_or_control_hiding","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"Nonessential interface chrome is hidden during trials while withdrawal and safety controls remain immediately available.","counterfactual_removal":"The temporal gap remains, but persistent chrome may continue attentional competition."},{"slug":"margin_and_gutter_system","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Reusable spatial spacing does not address temporal carryover between successive trials.","counterfactual_removal":"No material change occurs."},{"slug":"negative_space_logo","disposition":"incompatible","contribution_type":"NONE","adaptation_or_rejection":"Figure-ground symbolic discovery is unrelated to separating experimental events and could add a distractor.","counterfactual_removal":"No material change occurs."},{"slug":"pause_in_speech","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Live rhetorical emphasis is not the substrate; its timing principle is already supplied more directly by the rest frame.","counterfactual_removal":"No material change occurs."},{"slug":"sparse_layout","disposition":"selected_supporting","contribution_type":"OPERATIONAL","adaptation_or_rejection":"During the interval, retain only the fixation, progress, and indispensable controls established by the competition map.","counterfactual_removal":"The pause could be filled by visible nontrial elements, weakening attentional isolation."},{"slug":"whitespace","disposition":"considered_rejected","contribution_type":"NONE","adaptation_or_rejection":"Spatial proximity grouping does not supply the hypothesized temporal reset.","counterfactual_removal":"No material change occurs."}],"causal_chain":["Uninterrupted trial transitions leave preceding and upcoming signals temporally adjacent.","A protected low-information interval prevents the upcoming stimulus and redundant interface signals from immediately entering the field.","A minimal transition cue preserves orientation while bounded timing permits residual processing or response preparation to settle.","The next onset becomes more distinct from the preceding event.","If carryover caused the observed distortion, preceding-trial dependence decreases without loss of task comprehension."],"baseline":"The ordinary baseline presents the next trial immediately after response or feedback, while retaining the usual interface and instructions.","nearest_rival":"A matched-duration interval filled with a neutral but perceptually active mask or secondary display; it controls elapsed time but not protected absence.","authority_safety":{"affected_parties":["research participants","investigators interpreting participant data","groups represented by reported cognitive findings"],"decision_authority":"The study principal investigator and ethics-approved protocol owner, with participants retaining consent and withdrawal authority.","authorized_first_step":"Run a preregistered, within-participant pilot using immediate transition, minimally cued blank interval, and matched-duration active-mask conditions; vary only bounded transition content and measure preceding-trial dependence, comprehension, errors, response times, and discomfort.","excluded_actions":["hide withdrawal or emergency controls","remove consent, warnings, accessibility support, or task-critical instructions","use unbounded silence or unexplained blank screens","reinterpret null or adverse results as participant failure","deploy protocol-wide before the bounded pilot and ethics review"],"halt_rollback":"Stop a condition if participants repeatedly interpret it as failure, show elevated distress or withdrawal, or cannot access controls; restore the ordinary transition and retain all removed material for recovery."}},"negative_tests":{"strongest_counterevidence":"The apparent carryover may be an intended sequential dependency of cognition, a motor refractory effect, fatigue, or stimulus imbalance; inserting blanks could change strategy without isolating residual competition.","analogy_break":"Unlike visual whitespace, an interval changes elapsed time and temporal expectation. Any benefit may come from delay or predictability rather than absence itself.","failure_condition":"The interval becomes confusing, induces temporal anticipation, lengthens sessions enough to add fatigue, or suppresses a genuine cognitive sequence effect.","problem_falsifier":"After controlling stimulus, motor, fatigue, and order factors, immediate transitions show no reliable preceding-trial dependence, missed boundary, or transition-comprehension problem.","intervention_falsifier":"A minimally cued blank interval does not outperform the matched-duration active-mask rival on carryover-sensitive outcomes, or any improvement is offset by worse comprehension, accessibility, distress, or fatigue.","risks":["Treating a theoretically meaningful sequential effect as nuisance contamination","Creating expectancy from fixed interval timing","Increasing fatigue through longer sessions","Blank screens being mistaken for technical failure","Removing cues needed by participants using assistive technologies","Hiding controls or information necessary for consent and withdrawal"]},"null_rationale":null,"classification":{"candidate_kind":"MECHANISM_ADAPTATION","prior_art_status":"UNSEARCHED","evidence_maturity":"HYPOTHESIS"},"revision_change_log":{"revision_kind":"ORIGINAL","prior_problem_id":null,"prior_causal_lever_id":null,"problem_changed":false,"causal_lever_changed":false,"conceptual_changes":[],"operational_changes":[],"repairs_addressed":[]},"confidence":0.81,"generator_notes":"Closed-book structural inference from the supplied packet. The candidate depends on distinguishing the effect of protected absence from elapsed time, masking, temporal expectation, and genuine sequential cognition."}