Code for headings/accessibility blog post.

functions.php

<?php

// Add Accessibility support
add_theme_support( 'genesis-accessibility', array(
	'404-page',
	'drop-down-menu',
	'headings',
	'rems',
	'search-form',
	'skip-links'
) );

// Add screen-reader-text class to archive titles
add_filter( 'genesis_attr_archive-title', 'leaven_hide_archive_titles' );
function leaven_hide_archive_titles( $attributes ) {
	$attributes['class'] = 'screen-reader-text';
	return $attributes;
}

style.css

/* Never, never, never do it this way: */
.entry-title, .archive-title, .archive-description {
	display: none;
}

/* CSS for screen reader text support */
.screen-reader-text,
.screen-reader-text span,
.screen-reader-shortcut {
	position: absolute !important;
	clip: rect(0, 0, 0, 0);
	height: 1px;
	width: 1px;
	border: 0;
	overflow: hidden;
}

.entry-title, .archive-title, .archive-description {
	position: absolute !important;
	clip: rect(0, 0, 0, 0);
	height: 1px;
	width: 1px;
	border: 0;
	overflow: hidden;
}