SELECTED SHORTS host Meg Wolitzer presents three provocative works about rituals that reshape and define their characters. In “oh she gotta head fulla hair,” by Ntozake Shange, a woman’s attention to her hair consumes her life. The reader is Tamara Tunie. In “Half a Day,” by Naguib Mahfouz, performed by Bruce Altman, time collapses and a lifetime goes by in a flash. And in Charles Baxter’s “Fenstad’s Mother,” a mother and son rehearse old patterns and find new ones. The reader is Edie Falco.