Page 188 - BUKU SYNOPSIS

very good. Both measured person and item have good saparation index; 2.

11 and 1.92 respectively. Sumintono (2022); Sumintono and Widhiarso

(2015) claim that the bigger the separation value, the better the instrument's

quality regarding all respondents and items, because it can identify groups

of respondents and groups of items.

In addition, to check the respondent’s ability to differentiate the four scales,

Rasch model shows by the table of rating (see Table 24)

Table 27. Rating scale of PA Instrument

.

Table 27 shows that the observation average and Adrich Threshold score

range from the lowest to the highest, which indicates that the students can

differentiate the description of the scales to determine to what extent their

peer’s text meets the criteria stated in the rubric. The result is evident in the

students' peer assessment, as outlined in section B of this manuscript.

2. Cycle 2

a) Evaluation and Revision

The researcher decided to concentrate on the findings and reflection of Cycle

1. In general, Cycle 1 interventions can encourage students to develop their

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