asq_ord_bool

This function takes 3 U values for the asq-test for 2 ordered
mediators, as well as an alpha level. It returns whether the
test would reject at the given alpha level. Additionally,
the cutoff, either specified by number of squares or the 
percentage towards the center of the transformation region, 
can be specified.
This function is primarily called by the asq_ord function
to determine if the test is significant at one of a chosen
set of alpha values.

Used in testing if the indirect effect from linear regression mediation analysis is equal to 0. Includes established methods such as the Sobel Test, Joint Significant test (maxP), and tests based off the distribution of the Product or Normal Random Variables. Additionally, this package adds more powerful tests based on Intersection-Union theory. These tests are the S-Test, the ps-test, and the ascending squares test. These new methods are uniformly more powerful than maxP, which is more powerful than Sobel and less anti-conservative than the Product of Normal Random Variables. These methods are explored by Kidd and Lin, (2024) <doi:10.1007/s12561-023-09386-6> and Kidd et al., (2025) <doi:10.1007/s10260-024-00777-7>.

John Kidd

ieTest

Indirect Effects Testing Methods in Mediation Analysis

asq_ord_bool function

<dl><dt>alpha</dt>
<dd>Significance level for the test.</dd>
<dt>u1, u2, u3</dt>
<dd>The U values to be used in the test</dd>
<dt>numSquares</dt>
<dd>The number of squares to be used in the asq-test. Always superceded by upLim</dd>
<dt>upLim</dt>
<dd>The allowed extension, between 0 and 1, of the squares towards the center of the region</dd></dl>

Arguments

Is the mediation effect significant? — asq_ord_bool

<dl>

<dt>alpha</dt>
<dd>Significance level for the test.</dd>


<dt>u1, u2, u3</dt>
<dd>The U values to be used in the test</dd>


<dt>numSquares</dt>
<dd>The number of squares to be used in the asq-test. Always superceded by upLim</dd>


<dt>upLim</dt>
<dd>The allowed extension, between 0 and 1, of the squares towards the center of the region</dd>

</dl>

asq_ord_bool: Is the mediation effect significant?

Description

Usage

Value

Arguments

Examples