SUMMARY ANSWER The available high- quality evidence indicates that specific treatments may give rise to different effects on cognitive development , with certain treatments , including ICSI , associated with cognitive impairment .
STUDY QUESTION Does  fertility treatment  influence cognitive ability in school aged children , and does the impact vary with the type of treatment ?
WHAT IS KNOWN ALREADY Previous review s of the literature concerning cognitive outcomes among children conceived with medical assistance have concluded that study findings are generally ' reassuring ' , but limited attention has been paid to the quality of this research .
In addition , no review has separately assessed the range of treatment modalities available , which vary in invasiveness , and thus , potentially , in their effects on developmental outcomes .
Neuromotor development and mental health at 5.5 years of age of singletons born at term after intracytoplasmatic sperm injection ICSI: results of a prospective controlled single-blinded study in Germany.
OBJECTIVE To assess the neurodevelopmental health of children born after intracytoplasmatic sperm injection ( ICSI ) .  DESIGN Prospect i ve controlled blinded study . SETTING Tertiary care center . PATIENT(S ) A total of 276 term-born singletons conceived by ICSI and 273 matched spontaneously conceived ( SC ) singletons at the age of 5.5 years . MAIN OUTCOME MEASURE(S ) Neuromotor development assessed by a detailed neurologic examination , including the st and ardized motor test MOT 4 - 6 , and emotional/behavioral development and intelligence assessed with the Kaufman- Assessment Battery for Children . RESULT ( S ) There were no significant differences between ICSI children and control children regarding the neurologic examination , motor skills , emotional/behavioral development , and intelligence . CONCLUSION ( S ) The ICSI children born at term develop normally , similar to SC children
SUMMARY ANSWER The available high- quality evidence indicates that specific treatments may give rise to different effects on cognitive development , with certain treatments , including ICSI , associated with cognitive impairment .
STUDY QUESTION Does  fertility treatment  influence cognitive ability in school aged children , and does the impact vary with the type of treatment ?
WHAT IS KNOWN ALREADY Previous review s of the literature concerning cognitive outcomes among children conceived with medical assistance have concluded that study findings are generally ' reassuring ' , but limited attention has been paid to the quality of this research .
In addition , no review has separately assessed the range of treatment modalities available , which vary in invasiveness , and thus , potentially , in their effects on developmental outcomes .