Get Reading Measures from Data Viewer
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In reading research it is common to report standard "reading measures" which refer to a critical word or phrase in the text.

There are two ways to extract Reading Measures from Data Viewer, and both approaches are described in detail in the following FAQ:
How do I extract Reading Measures from Data Viewer?

The first approach, which provides a great deal of flexibility with respect to defining the critical word or words,  is to use the Get Reading Measures tool, which can be downloaded from the link below (which also contains detailed instructions for use):
Get Reading Measures Application

Get the Reading Measures is a Python script / executable that allows users to extract eye movement metrics that are common in reading research from a Data Viewer fixation report. The output file will be like a Trial Report from Data Viewer, in that each row will represent one trial. You can select the reading measures to be included in the output file from the program's dialog. Importantly, you can also specify the start and end word for the critical region (the region for which the reading measures should be computed) in a variety of ways. The use of these different ways of specifying the start and end word values allows you to expand critical regions around pre-defined interest areas and to allow the critical region to shift positions across trials (provided that one or more columns specifying the location of the critical region in word-number units for each trial have been included).

Alternatively, you can extract reading measures using a Data Viewer Interest Area Report.  To use this method the target regions (and any non-target regions) must be defined properly as Interest Areas in Data Viewer before creating the Interest Area Report. The advantage to this method as compared to using the Get Reading Measures tool is that the output from Data Viewer will contain the values of these dependent measures directly. The disadvantage of this method is that if you want to generate these dependent measures for regions of text that are not the same as the currently defined Interest Areas (e.g., if you want to get Gaze Durations on a region composed of words 4 to 6 and currently your viewing session has Interest Areas around each work individually) then you will need to redefine your Interest Areas before generating the Interest Area Report.