Developmental Screening Test (DST)
A clinician's overview of the Developmental Screening Test (DST), the widely used Indian screening measure developed by J. Bharath Raj. How it estimates a developmental age and developmental quotient, and where it fits in Indian assessment.
Educational overview only. The DST is a published instrument obtained through its Indian suppliers and used by trained examiners. ElloMind does not provide the items or scoring; this page is educational only.
What it is
The DST, developed by J. Bharath Raj in Mysore in the 1970s, is a brief Indian measure for estimating a child's developmental level. Items describe behaviours and milestones typical of successive age levels, from infancy through mid-adolescence, and are answered mainly from a caregiver interview supplemented by observation.
It yields a developmental age, and from that a developmental quotient relative to chronological age, giving a quick index of whether development is on track.
If this test was given to you or your child
The DST is a short screening measure, usually 15 to 20 minutes, used from infancy up to around 15 years. Much of it is a conversation with you about what your child does — the milestones they have reached, what they manage on their own — supported by the psychologist observing your child.
It is a first look rather than a full assessment. Nobody is deciding anything about your child in twenty minutes.
Answer from what your child actually does day to day, not from their best-ever moment. Underreporting and overreporting both make the result less useful to you.
Reading the results
It gives an estimate of developmental level compared with typical milestones, sometimes expressed as a developmental age or quotient.
Because it is a screen, the useful output is a direction rather than a conclusion: development appears broadly on track, or something warrants a closer look. If it points toward the latter, the next step is fuller assessment, not a diagnosis.
The norms date from the 1970s, so a careful clinician treats the figure as approximate and weighs it against what they observe and what you describe.
What it cannot tell you
It cannot diagnose intellectual disability, autism or a developmental disorder. Screening tools are built to be quick and to over-refer slightly, because missing something matters more than checking twice.
It does not explain why a child is behind on something — whether that is ability, illness, opportunity, or not having been shown yet.
A screening result that worries you is a reason to ask for a fuller assessment, not a reason to conclude anything.
Who it is for
It is used with infants, children and young adolescents when development or possible intellectual disability is the question, particularly as a first, quick estimate before or alongside fuller testing.
It is administered by a trained examiner, usually with the parent or caregiver as informant, and is common in Indian clinical and disability-assessment settings.
For clinicians
How it is administered
The examiner works through the age-graded items with the caregiver, establishing which behaviours the child shows, and derives the developmental age from the levels passed. The developmental quotient is the developmental age relative to chronological age.
The test form and manual are obtained through Indian suppliers; the items are not circulated openly.
Use in India
The DST is one of the most widely used developmental screens in India because it is quick, inexpensive, and was developed for Indian children. In practice it is often administered together with the Vineland Social Maturity Scale in intellectual disability workups, with a full intelligence test following when the screen indicates. As with other Indian instruments of its era, clinicians keep the age of the norms in mind.
Related free tools
Citation and sources
Bharath Raj, J. (1977). Developmental Screening Test (DST). Mysore, India.
- Child developmental milestones (background) — Wikipedia
Frequently asked questions
A brief Indian measure by J. Bharath Raj that estimates a child's developmental age from age-graded behaviours and milestones, reported mainly by a caregiver, and expresses it as a developmental quotient relative to chronological age.
From the developmental age the child reaches on the age-graded items, taken relative to chronological age on the familiar quotient scale. The item-level rules are in the test manual.
No. It is a screen. A diagnosis requires a standardised intelligence test and an adaptive behaviour measure such as the Vineland Social Maturity Scale, interpreted by a qualified clinician; the DST commonly comes first and flags who needs that fuller assessment.
This page is general educational information for professionals, not clinical or legal advice, and not a substitute for training in the instrument. ElloMind does not provide, sell or reproduce copyrighted test materials.