Using a single blind, randomized controlled design to study the additional therapeutic effects of cognitive training on traditional rehabilitation programs for children with attention deficit hyperactivity disorder and developmental delays.

A total of 30 children with attention deficit hyperactivity disorder and developmental delays who are receiving traditional rehabilitation programs will be enrolled.

The participants will be randomized into two groups, including study group (traditional rehabilitation program with additional cognitive training: 2 times per week, 15 min per session, a total of 24 sessions) and control group (traditional rehabilitation program without additional cognitive training).

Memory related functions, quality of life, and physical function evaluations will be performed at baseline, 3 months and 6 months later, respectively.

Evaluator will be blinded to the group's classification during the whole course of study.

Inclusion Criteria:

• children diagnosed with attention deficit hyperactivity disorder with developmental delay receiving regular rehabilitation programs intelligence quotient 70 or greater

Exclusion Criteria:

• age less than 4 years or elder than 8 years children diagnosed with attention deficit hyperactivity disorder receiving regular rehabilitation programs intelligence quotient less than 70