Objective: To evaluate the psychometric properties of the Shortened Version of the Token Test (SVTT), the Peabody Picture Vocabulary Test (PPVT-III), and the Rey–Osterrieth Complex Figure (ROCF) using an item response theory (IRT) framework and to establish normative data for Waranka children and adolescents based on their ability scores. Methods: A total of 436 healthy people aged between 6 and 17 participated in this study. The factor structure was evaluated using confirmatory factor analysis (CFA) and the difficulty and discrimination parameters using IRT through the two-parameter logistic model for the SVTT and PPTV-III, while for the ROCF, the graded response model was used. The ordinal alpha and McDonald’s omega were used for reliability. Results: For most items, a low ability was enough to achieve the highest scores for the ROCF and SVTT. For the PPVT-III, the items aligned sequentially based on the difficulty, and a low level of ability was enough to achieve the highest score for the first 40 items. The ROCF, SVTT, and PPVT-III demonstrated adequate reliability. The ROCF copy and immediate recall scores were influenced by the mean parents’ years of education (MPE) and quadratic age interaction. The SVTT performance was affected by the quadratic age and sex interaction, and the PPVT-III by the interaction effect of the MPE and quadratic age. Conclusions: This is the first study to analyze the psychometric properties of the ROCF, SVTT, and PPVT-III through IRT models that are accurate and relevant for the validity of the obtained data and generate normative data in the under-represented nation of Ecuador for clinical and research purposes.

Background/Objectives: Most longitudinal evidence on post-acute COVID-19 comes from hospitalized patients in high-income countries and less is known about community samples in low- and middle-income settings. This study examined changes in perceived recovery, symptom burden, general health perception, and functional difficulties over six months in Ecuadorian adults with confirmed COVID-19. Methods: In a prospective observational cohort in Quito, Ecuador, 120 adults with laboratory-confirmed COVID-19 were assessed at baseline (within four weeks of diagnosis) and again three and six months after the baseline assessment; 91 completed all three assessments. The Spanish-language ISARIC follow-up survey covered 39 symptoms, perceived recovery, the EQ-5D-5L and EQ-VAS, and six Washington Group functioning items rated retrospectively for the pre-COVID period and currently. Analyses were exploratory and descriptive, and all p-values are nominal and unadjusted for multiple comparisons. Results: Participants’ perceived complete recovery improved (χ² = 15.24, p < 0.001), as did perceived general health (F(2, 178) = 5.80, p = 0.004). Chest pain, palpitations, muscle weakness, confusion, tinnitus, and diarrhea declined over follow-up. At six months, 37.4% still reported headaches, 35.2% fatigue, 35.2% confusion or inattention, and 25.3% sleep disturbance. Among EQ-5D-5L domains, only pain/discomfort improved (p = 0.012). Vision, walking, memory, and communication declined from pre-COVID to baseline and improved between baseline and six months; pre-COVID and six-month levels were not compared directly. Conclusions: Recovery over six months was gradual but incomplete, with a substantial minority reporting ongoing or recurrent symptoms at six months. These findings describe post-acute symptom burden following confirmed COVID-19 rather than formally diagnosed post-COVID-19 condition.