# Ages & Stages Questionnaires

## Ages & Stages Questionnaires: Third Edition (ASQ-3)

### A Parent-Completed Child Monitoring System

#### AT A GLANCE

| Type of screening    | Developmental screening                                                                                                     |
|----------------------|-----------------------------------------------------------------------------------------------------------------------------|
| Areas screened       | Communication, Gross Motor, Fine Motor, Problem Solving, and Personal Social                                                |
| Age range            | 1-66 months                                                                                                                |
| Number of questionnaires | 21                                                                                                                         |
| Age intervals (in months) | 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 30, 33, 36, 42, 48, 54, and 60                                           |
| Number of items      | 30 per questionnaire (6 for each area screened)                                                                            |
| Sample item          | Does your child stack a small block or toy on top of another one? (18-month questionnaire, Fine Motor area)                |
| Reading level of items| 4th to 6th grade                                                                                                         |
| Who completes it     | Parents (professionals may also if they know the child well)                                                              |
| Time to complete     | 10-15 minutes                                                                                                             |
| Who scores it        | Professionals (teachers, child care providers, nurses, home visitors, early interventionists, clerical staff, pediatricians) |
| Time to score        | 2-3 minutes                                                                                                               |
| Scores provided      | 5 raw scores, one for each area                                                                                          |
| What the scores tell you | The raw scores are compared to cutoff points for each area, which show whether the child may need further assessment, should be monitored and rescreened, or is doing well. |
| Photocopiable        | Yes                                                                                                                       |
| Languages            | Arabic, Chinese, English, French, Spanish, and Vietnamese                                                                 |
| Training             | Not required but encouraged! Training DVDs available for purchase as well as in-person introductory and train-the-trainer seminars through Brookes On Location. |
| Standardization sample | 18,527 questionnaires for 15,138 children from diverse racial and socio-economic backgrounds                                  |
| Reliability          | Test-retest: .92 (excellent); Inter-rater: .93 (excellent)                                                                 |
| Validity             | .82 to .88 (excellent)                                                                                                   |
| Sensitivity          | .86 (excellent)                                                                                                           |
| Specificity          | .85 (excellent)                                                                                                           |
| Years in development  | 30 years                                                                                                                  |

**Authors**: Jane Squires, Elizabeth Twombly, Diane Bricker, & LiWanda Potter