Establishing Normal Cognitive Test Scores for Adults Using a Voice-Enabled Digital Testing Platform Across the Lifespan

Inclusion Criteria: * Adults aged 18 to 100 years at the time of enrollment. * Able to read, speak, and understand English sufficiently to complete all study procedures. * Able and willing to provide informed consent. * Adequate hearing, speech, and vision (with corrective devices if needed) to complete computerized voice-recognition cognitive testing. * Able to independently complete the digital cognitive assessment using a computer, tablet, or smartphone with internet access (or at a supervised study site if applicable). Exclusion Criteria: * Known Cognitive Impairment Self-reported or previously diagnosed cognitive impairment, memory disorder, mild cognitive impairment, or dementia. * Neurological Disease or Brain Injury History of a neurological condition or brain injury that, in the opinion of the investigator, may adversely affect cognitive performance. * Psychiatric Illness Current or untreated psychiatric illness that may significantly influence cognitive testing performance. * Substance Use or Cognitive-Impacting Medications Current use of substances or medications known to significantly impair cognition or recent substance use that could affect test validity. * Sensory or Communication Limitations Inadequate English proficiency or speech, hearing, or visual impairments that would prevent valid completion of the digital cognitive assessment. * Functional or Medical Conditions Affecting Cognition Medical conditions or functional impairments that, in the opinion of the investigator, may interfere with accurate assessment of normal cognitive performance. * Investigator Discretion Any other condition or circumstance that, in the judgment of the Principal Investigator, would compromise participant safety, study compliance, or the validity of the normative dataset.