We provide a formal proof of equivalence between the class of fractals created by Recursive Turtle Programs (RTP) and Iterated Affine Transformations (IAT). We begin by reviewing RTP ( a geometric interpretation of non-bracketed L-systems with a single production rule) and IAT (Iterated Function Systems restricted to affine transformations). Next, we provide a simple extension to RTP that gener...

CONTEXT Studies involving physicians suggest that unconscious bias may be related to clinical decision making and may predict poor patient-physician interaction. The presence of unconscious race and social class bias and its association with clinical assessments or decision making among medical students is unknown. OBJECTIVE To estimate unconscious race and social class bias among first-year ...

Extensive research has been conducted demonstrating the predictive validity and reliability of the IAT for a broad array of behaviors and contexts. However, less work has been done examining its underlying construct validity. This contribution focuses on examining whether a core theoretical foundation of the IAT paradigm is valid, specifically, whether the IAT effect draws on the Social Knowled...

Utilization of intraoperative autotransfusion (IAT) during cardiac surgery with cardiopulmonary bypass (CPB) has been shown to reduce allogeneic red blood cell transfusion. Previous research has emphasized the benefits of using IAT in the intraoperative period. The present study was designed to evaluate the effects of using IAT on overall hematocrit (Hct) drift between initiation of CPB and the...

BACKGROUND Screening of alloantibodies in patients is not yet done in district hospitals of Rwanda. The practice is to transfuse ABO/D compatible blood following an immediate spin crossmatch (IS-XM) or indirect antiglobulin test crossmatch (IAT-XM). OBJECTIVES To assess the risk of red blood cell (RBC) alloimmunisation associated with the use of IS-XM compared to the IAT-XM in patients receiv...

BACKGROUND AND PURPOSE Clinical trials are assessing the efficacy of fibrinolysis in extended time windows for acute ischemic stroke. METHODS An Internet-based survey was sent to 400 US vascular neurologists affiliated with a university to assess whether there are consensus opinions on how they treat patients beyond 3 hours from symptom onset and which patients they are willing to enroll into...

Recent research has identified an important role for task switching, a cognitive control process often associated with executive functioning, in the Implicit Association Test (IAT). However, switching does not fully account for IAT effects, particularly when performance is scored using more recent d-score formulations. The current study sought to characterize multiple control processes involved...

BACKGROUND AND PURPOSE Stroke-associated pneumonia (SAP) is associated with poor functional outcome in patients with acute ischemic stroke (AIS). The objective of this study was to identify predictors of SAP in patients underwent intra-arterial treatment (IAT). METHODS Consecutive patients with AIS within 6 h from the symptom onset underwent IAT were enrolled. Independent predictors of in-hos...

WRIGHT, NATALIE ANN. A Study of the Predictive Validity and Procedural Justice of the Implicit Association Test. (Under the direction of Dr. Adam Meade). Recent research has provided evidence that scores on the Implicit Association Test (IAT) are contaminated by cognitive ability (e.g., Back, Schmulke, & Egloff, 2005; McFarland & Crouch, 2002). Although the IAT has been generally viewed with su...

The implicit association test (IAT) is increasingly used to detect automatic attitudes. Yet a fundamental question remains about this measure: How well can it predict individual judgments? Though studies find that IAT scores shape individual evaluations, these inquiries do not account for an array of well-validated, theoretically relevant variables, thus raising the challenge of omitted variabl...