Today, in-person and on-line programs for reader development, language learning, homework help, free lectures and cultural performances, and other community service programs are common offerings. The library storytime, in which books are read aloud to children and infants, is a cultural touchstone. Most public libraries offer frequent storytimes, often daily or even several times a day for different age groups. Some libraries have begun offering sensory storytimes for children and adults on the autism spectrum. Sensory storytimes give patrons "more ways to process information", especially considering people on the autism spectrum are concrete thinkers and/or might have sensory issues to fluorescent lightning or ambient noise other patrons might not notice.