The Verb Generation task is based on that described by Binder et al. and involves the auditory presentation of a series of nouns. The subject is required to generate verbs that are associated with each noun. For example, if the noun "ball" is presented, the subject might generate the verbs "throw," "kick," and "hit." The subject is instructed to think the verbs silently, without saying them, in order to minimize the motion artifact associated with speech. Task performance is monitored by a button push each time the subject thinks of a verb. This expressive task is assumed to require the engagement of dominant frontal lobe and parietal lobe language areas. This task is derived from the clinical literature as an MRI analog of the procedure used in the Wada test. It is now widely used for testing hemispheric dominance for language in adults. It is included in the current protocol partly to provide a point of comparison with the existing literature as well as with our own preliminary data from other populations. Finally, this is a difficult semantic task and fits neatly into the scope of the language skills we are seeking to monitor with lead exposed young adults.