Complete the following statements.
Choose the correct word and move it into the gap.

It is easier to determine [1] than living standards.
A decrease in [2] during the 20th century led to a bigger investment in leisure.
According to Ms Costa, how much Americans spend on leisure has been directly affected by salaries and [3].
The writer notes both positive and negative influences of [4].
According to the writer, the way Ms Costa defined [5] may have been misleading.