Fear of the unknown. Fear of the unknown or irrational fear is caused by negative thinking (worry) which arises from anxiety accompanied with a subjective sense of apprehension or dread. Irrational fear like any other fears share common neural pathway that engages to mobilize bodily resources in the face of threat.
CITI Refresher. In order to maintain CITI certification, everyone is required to complete the CITI Refresher course every three (3) years after initial certification is obtained. Completion of the refresher modules can usually be completed in less than two hours. New employees must complete the required modules and obtain CITI certification within 90 days from date of hire. 2  Members of the human subject research team, including the Principal Investigator (PI), must have current certification.
CST Certification Renewal. The NBSTSA requires you to renew your CST certification every four years. You can start this process up to six months before your credential runs out. If you have earned enough continuing education credits during your certification period, you can use these to re-certify. As of February 2014, you need 60 credits to renew a CST credential. If you do not have enough credits, you must pass the CST exam again.