Abstract: Systems and methods for detecting a motor developmental delay and/or neurodevelopmental disorder of an infant are described herein. An example method can include receiving motion data associated with the infant's gross motor activity; analyzing, using a machine learning algorithm, the motion data to detect a kinematic feature; comparing the kinematic feature to an expected relationship between the kinematic feature and infant age; and detecting the neurodevelopmental disorder based on the comparison. An infant sensor suit is also described herein. An example infant sensor suit can include an article of clothing; a plurality of sensors; a power source operably coupled to the sensors; and a wireless transmitter operably coupled to the sensors. The sensors, power source, and wireless transmitter can be incorporated into the article of clothing.