Materials<br>The following equipment was used to construct a platform swing which was suspended from the ceiling of the session room to a height of 40 cm above the floor: 4 Southpaw Enterprise Safety Snaps; 1 Southpaw Enterprise Safety Rotational Device (SATR-2000); 1 Southpaw Enterprise Vertical Stimulation Device (ELX-1930); 1 Southpaw Enterprise Linear Glider (LG-1850); and 2 Skill Development Equipment folding floor mats (DM-5). This equipment allowed the swing to rotate freely in either direction, and for vertical movement ranging be- tween 20 cm and 40 cm off the floor. Other equipment included: 1 Toshiba AM/EM Cassette Recorder (RT-120s) and 1 Sony Cassette Tape (LNX-60). The experimental music consisted of the following songs: "Grease," Grease Soundtrack; "Maniac," Elashdance Soundtrack; "Jungle," Electric Light Orchestra—Out of the Blue; and "Winter," Walter Carlos— Sonic Seasonings. These particular pieces were selected either for the presence or absence of a consistent rhythm and tempo. Loudness level for the cassette recorder was initially set at a comfortable listening level by each therapist, and then remained consistent throughout all conditions of their sessions.
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