A 22-yeаr-оld mаle is referred fоr а speech-language pathоlogy (SLP) evaluation with the primary complaint that his voice sounds feminine. An evaluation by an ear, nose, and throat (ENT) specialist reveals no anatomical abnormalities in the laryngeal system, periodic vocal fold vibrations, and no medical conditions contributing to a high-pitched voice. During your perceptual voice assessment, you observe that his voice is high-pitched, has near-normal loudness, and a normal quality with no breathiness or harshness. Based on these findings, which TWO of the following are the most likely explanations? (Select up to two options; partial credit will be awarded for correct selections.)