Psychology Research Participation System The Psychology Research Participation System (Sona Systems) is an online portal that allows students enrolled in undergraduate psychology courses to sign up and participate in research. Learn More Participant Database for Children Child Studies at UC Riverside is collection of psychology faculty with a common interest in understanding how infants and children develop. Learn More Participant Database for Older Adults Lifespan Research at UC Riverside is collection of psychology faculty with a common interest in understanding aging from a lifespan perspective. Learn More