| Child SE | Ages & Stages Questionnaire (ASQ) (M, F, O) | | X | X | X | X | X | X | X | X |
| Child SE | Ages & Stages Questionnaire Socioemotional (ASQ-SE) (M, F, O) | | X | X | X | X | X | X | X | X |
| Child SE | Infant Behavior Questionnaire – Very Short form (IBQ) (M, F, O) | | X | X | | | | | | |
| Child SE | Early Childhood Behaviour Questionnaire (ECBQ) - Very Short Form (M, F, O) | | | | | | | X | | |
| Child SE | Children’s Behavior Questionnaire – Very Short form (CBQ) (M, F, O) | | | | | | | | X | X |
| Child SE | Highly Sensitive Child Scale (HSC) (M, F) | | | | | | X | X | X | X |
| Child SE | Singelis Self-Construal Scale (M, F, O) | X | X | X | | | X | X | X | |
| Child SE | Inventory for Callous Unemotional Traits (ICU) (M, F, O) | | | | | | | | | X |
| Child SE | Strengths and Difficulties Questionnaire (SDQ) (M, F, O) | | | | | | | X | X | X |
| Child EF | Behaviour Rating Inventory of Executive Function (BRIEF) (M, F, O) | | | | | | | X | X | X |
| Child PA | Developmental Vocabulary Checklist (DVC) (M, F, O) | | | X | X | X | X | X | X | |
| Caregiver Behavior | Coping With Toddlers’ Negative Emotion Scale (CTNES) (M, F) | | | | | | | X | | |
| Caregiver Behavior | Coping with Children's Negative Emotions Scale (CCNES) (M, F) | | | | | | | | X | X |
| Caregiver Behavior | Qsort for Parent about Self (MBQS) (M, F) | | | X | | | X | | | |
| Caregiver Behavior | Interpersonal Mindfulness in Parenting Scale (IM-P) (M, F, O) | | | X | | | X | | X | X |
| Caregiver Behavior | Parental Reactions Questionnaire (PRCPS) (M, F) | | | | | | X | X | X | X |
| Caregiver Mental | Depression Anxiety and Stress Scales (DASS-21) (M, F) | X | X | X | | | X | X | X | X |
| Caregiver Mental | State-Trait Anxiety Inventory (STAI) – Trait only (M, F) | X | X | X | | | X | X | X | X |
| Caregiver Mental | Five-Facet Mindfulness Questionnaire – Short form (FFMQ-15) (M, F, O) | | | X | | | X | | X | X |
| Demographics | Health Background/Review of Health Background - Demographics (M, F, O) | X | X | X | X | X | X | X | X | X |
| Environment | Socio-Economic Status (SES)/Review of SES at other timepoints (M, F, O) | X | X | X | X | X | X | X | X | X |
| Environment | Primary Caregiving Questionnaire (PCQ) (M, F, O) | | X | X | | | X | X | X | X |
| Environment | COVID Questionnaire (M, F) | X | X | X | X | X | X | X | X | X |