Yes, the default date range for all reports is by pay period. If needed, you can adjust the date range for any report by using the arrows to scroll through your pay periods dates or selecting the calendar to pick a custom date range for your report.  
Quick Pick dates are also available such as:

• This Pay Period
• Last Pay Period
• This Week
• Last Week
• This Month
• Last Month
• Today

Tip: Try custom date ranges by just selecting dates on the calendar.