The Central Iowa chapter of the Public Relations Society of America will host a talk about the techniques used to evaluate social media effectiveness through both qualitative and quantitative analysis. Katie Miller-Smith, director of Catchfire Media LLC, will lead the June 23 discussion at the Holiday Inn Downtown, 1050 Sixth Ave. The luncheon is scheduled to take place from 11:30 a.m. to 1 p.m. To register, go to www.prsaciowa.org. The deadline is today.