According to Sellers et al. (2016), which of the following are potential methods for evaluating the effects of supervision? Select all that apply. Group of answer choices Ask the supervisee to fill out a brief structured survey Ask colleagues if the supervisee is becoming more competent Track the number and rate of competencies completed by the supervisee. Ask the supervisee's clients if the supervisee is improving Track the number and type of errors made in permanent products by the supervisee Assume the supervisee is becoming a more competent behavior analyst Base the degree of competency solely on the graded coursework the supervisee is completing Assess the use of precise language by the supervisee