['\u2002 Impaired profiles of neurocognitive function have been consistently demonstrated among pediatric patients with bipolar disorder (BD), and may aid in the identification of endophenotypes across subtypes of the disorder. This study aims to determine phenotypic cognitive profiles of patients with BD Type I and II.', '\u2002 Subjects (N\u2003=\u200379) consisted of BD I (n\u2003=\u200327) and BD II (n\u2003=\u200319) patients and demographic and intellectually matched healthy controls (HC; n\u2003=\u200333) that completed a battery of neurocognitive tasks.', '\u2002 Bipolar disorder Type I patients performed significantly more poorly compared to HC on all domains of cognitive function including attention, executive function, working memory, visual memory, and verbal learning and memory. BD I patients also performed more poorly compared to BD II patients on all domains of cognitive functioning with the exception of working memory, whereas BD II patients did poorly relative to HC only on verbal learning and memory.'] Is cognitive dysfunction worse among pediatric patients with bipolar disorder Type I than Type II?