Final answer:
A researcher is likely to find a negative correlation between impulsivity and self-control, with these two variables having an inverse relationship.
Step-by-step explanation:
A researcher would most likely find a negative correlation between scores on a measure of impulsivity and scores on a measure of self-control. This is because these two variables typically move in opposite directions; as impulsivity increases, self-control tends to decrease, and vice versa. The correlation coefficient, represented by r, would be expected to be less than 0, indicating a negative relationship. A negative correlation is different from no correlation, which would have a correlation coefficient of 0, indicating no association between the variables. The stronger the negative correlation, the closer the r value is to -1.