“…Some people with insomnia instead try to suppress unwanted thoughts, but suppression attempts have the opposite effect; that is, the unwanted thoughts (and wakefulness) persist even longer (Ree, Harvey, Blake, Tang, & Shawe-Taylor, 2005). This cycle of unwanted recurring thoughts has been described in many different disorders as repetitive thinking (Segerstrom, Tsao, Alden, & Craske, 2000), and the most pertinent types of repetitive thinking in insomnia are rumination and worry (Carney, Edinger, Meyer, Lindman, & Istre, 2006;Thoresen, Coates, Kirmil-Gray, & Rosekind, 1981). The intrusion of this type of thinking has prompted the testing of bedtime arousal-decreasing strategies for processing intrusive material for the day via early evening problem solving or a Pennebaker writing assignment.…”