The Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III) is an individually
administered instrument that assesses the developmental functioning of infants and young children. The
Bayley-III consists of three administered scales: the Cognitive Scale, the Language Scale, and the Motor
Scale. The Social-Emotional Scale and the Adaptive Behavior Scale form the Social-Emotional and
Adaptive Behavior Questionnaire, which are completed by the parent or primary caregiver. The following
results were obtained:
Scale/Subtest
Composite Score/
Percentile
Scaled Score
Cognitive
Language
Receptive Communication
Expressive Communication
Motor
Fine Motor
Gross Motor
Social-Emotional
Adaptive Behavior (GAC)
Communication
Community Use
Functional Pre-Academics
Home Living
Health and Safety
Leisure
Self-Care
Self-Direction
Social
Motor
Composite Scores have a Mean of 100 and a Standard Deviation of 15
Scaled Scores have a Mean of 10 and a Standard Deviation of 3
An analysis of Xxx’s performance across the various developmental domains indicates (summarize what
student could and couldn’t do)
Or
The Cognitive Scale includes items that assess sensorimotor development, exploration and manipulation,
object relatedness, concept formation, memory, and other aspects of cognitive processing. Xxx’s score in
this area was in the *average range with a standard score of .
The Language Scale assesses preverbal behaviors; vocabulary development; vocabulary related to
morphological development; social referencing, and verbal comprehension. Xxx’s score in this area was
in the *average range with a standard score of . If the subtests are different from one another, talk about
specific scores.
The Motor Scale measures both fine and gross motor skills. Xxx’s score in this area was in the *average
range with a standard score of . If the subtests are different from one another, talk about specific scores.
The Social-Emotional Scale assesses the acquisition of social and emotional milestones by identifying
the major developmental milestones that should be achieved by certain ages. It assesses a child’s mastery
of functional emotional skills; communicating needs; engaging others and establishing relationships;
using emotions in an interactive, purposeful manner; and using emotional signals or gestures to solve
problems. Xxx’s score in this area was in the *average range with a standard score of . If the subtests are
different from one another, talk about specific scores.
The Adaptive Behavior Scale is a measure of a child’s overall adaptive development and assesses the
daily functional skills of a child, measuring what the child actually does, in addition to what he or she
may be able to do. The areas measured include Communication (speech, language, listening, and
nonverbal communication), Community Use (interest in activities outside the home and recognition of
different facilities), Health and Safety (showing caution and keeping out of physical danger), Leisure
(playing, following rules, and engaging in recreation at home), Self-Care (eating, toileting, bathing), SelfDirection (self-control, following directions, and making choices), Functional Pre-Academics (letter
recognition, counting, and drawing simple shapes), Home Living (helping adults with household tasks
and taking care of personal possessions), Social (getting along with other people: using manners, assisting
others, and recognizing emotions), and Motor (locomotion and manipulation of the environment). Xxx’s
score on the General Adaptive Composite (GAC) was in the *average range with a standard score of. If
the subtests are different from one another, talk about specific scores.