Mullen™ Technical Information
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Mullen™ Technical Information

Publication Data

Instrument name/abbreviation Mullen Scales of Early Learning: AGS Edition
Author Eileen M. Mullen, EdD
Publisher/address Pearson Assessments, Bloomington, MN
Copyright date Purchased by AGS Publishing in January 1993
Infant MSEL copyright 1985, 1987, 1989
Preschool MSEL copyright 1981, 1984, 1992
AGS Publishing Edition copyright 1995

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Product Description

Primary use/purpose The Mullen Scales: AGS Edition is a comprehensive measure of a child's motor, perceptual, and language abilities. It is used to help determine need for special services, and assess learning styles, strengths, and weaknesses.
Age range covered Birth through 68 months
Administration time 25–40 minutes
Individual vs. group Individually administered
User qualifications Level B. Mullen users "should have completed graduate training and have experience in clinical infant assessment."

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Domains Gross motor (birth to 33 months), receptive and expressive language, visual-perceptual skills, and visual-motor skills (including fine motor)
Scale names Gross Motor
Visual Reception
Fine Motor
Receptive Language
Expressive Language
Composite Early Learning Composite
Forms N/A
Materials included in the kit Manual
Item Administration Book (directions for administering and scoring all items)
Stimulus Book
Record Forms (25 per package) and manipulatives

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Item Information

Item types Performance based. Each item is a unique type (e.g., Gross Motor Scale: standing, walking, running; Visual Reception Scale: matching, sorting, nesting cups; Fine Motor Scale: stacking blocks, drawing, stringing beads; Receptive Language Scale: recognizing body parts, following commands; Expressive Language Scale: answering questions, completing analogies).
Response format Depends on item type. Items carefully developed to pose a challenge only in the modality being assessed (the Receptive Language Scale, for example, requires no verbal expression).
Item scoring Varies by item, from 1 to 5 points

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Scoring Information

Derived scores available Scales:
T score (mean = 50; SD = 10)
band of error (90 and 95 percent confidence)
percentile rank
age equivalent
developmental stage (to 33 months)
descriptive category

Standard score (mean = 100, SD = 15)
band of error (90 and 95 percent confidence)
percentile rank
descriptive category
Norm groups available Census sample
Interpretive features Manual provides interpretive information, including case studies.
Computerized scoring ASSIST available for DOS, Windows®, and Macintosh®. The ASSIST™ report offers recommended activities based on the You and Your Small Wonder books by Merle Karnes.

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Technical Information—Standardization

Description The Mullen was standardized over a period of 8 years in three phases.
Date June 1981–April 1989
Size 1,849
Based on the U.S. census data in the years 1987, 1988, 1989.

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Controlled for: Females Males
Age/Gender Yes Yes
Race Yes Yes
Geographic region Yes Yes
SES/parent occupation Yes Yes
Community Size Yes Yes
Special populations included No No

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Internal consistency Y
Test-retest Y
Interrater Y
Standard errors of measurement Y

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Intercorrelations Y
Content Y
Construct Y
Concurrent 6 studies
Predictive 1 study
Factor Analysis Y
Clinical Sample N/A
Other instruments used in correlation studies Bayley Scales of Infant Development®, Preschool Language Assessment, Peabody Developmental Motor Scales, Birth to Three Scale, Fine Motor Subtest of the Brigance Inventory of Early Development, Developmental Test of Visual Motor Integration, Metropolitan Readiness Test

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Developmental history The Infant MSEL was developed first as a measure of early development. The Preschool MSEL was an upward extension of the Infant MSEL. The AGS Edition combines the two earlier versions into a single test with continuous norms for children from birth through age 5–8.
Special features The Mullen Scales: AGS Edition has a unique theoretical base among 0–3 assessments, with an emphasis on differential development in distinct domains. Results focus attention on the child's areas of strength and weakness.
Federal mandates met MSEL covers 3 of the 5 areas required by federal legislation (motor, cognition, and language)
Adaptation for special needs Although standardized assessment directions should be followed, the manual contains suggestions for optimizing the performance of a child with an "uneven learning pattern."
Training options available None are available at this point.

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