get_categories 'parent' parameter not working

Hi all,

I’m having some troubles with what would appears to be a simple idea. I’m trying to:

1. Output a list of child categories to the depth of 1
2. Customise that list

I have chosen to use get_categories due to my lack PHP skill in creating a custom walker for wp_list_categories. As I understand it I should simply able to pass ‘parent’ => cat_ID as an argument into get_categories for it to return child (1 level below the parent).

I’m finding that when using parent I get no output, but if I use child_of I get all children and grand-child.

<ul id="find-it" class="group">

               		<?php $args = array('child_of' => 922); ?>
                	<?php
							$categories = get_categories($args);
					  		foreach($categories as $category) {

							echo'<li>

									<a id="'. $category->slug .'" href="">' . $category->name . '

										<span>'. $category->description .'</span>

									</a>'; ?>

									<img src="<?php bloginfo('template_directory'); ?>/assets/graphics/category-image/<?php echo $category->slug ?>.jpg" />

								  <?php echo '</li>'

							;}
					 ?>

                </ul>

The live page can be found here and is currently using child_of to demonstrate the layout.

Can anyone explain why parent isn’t working/what I’m doing wrong?