A Study of How We Perceive People

In a now classic study, Srull and Wyer (1979) found that by priming participants with hostility related stimuli in a sentence unscrambling task caused subsequent judgment of a person (Donald) behaving ambiguously to be perceived as more hostile. As part of a larger, multi-lab collaborative study conducted by Randy McCarthy, the purpose of this study is to replicate the findings found in Srull and Wyer (1979) by focusing on two conditions that demonstrated a clear priming effect, the use of 30 sentences in the sentence unscrambling task and the immediate testing condition. Participants first completed a sentence unscrambling task, followed by the reading of a brief vignette about a man named Donald behaving ambiguously hostile and then rated him on a set of personality traits. As an indicator of hostility, we examined ratings of three traits (hostile, unfriendly, and dislikeable) to create an average hostility score for participants of both groups. Participants in the experimental group who descrambled mostly hostile sentences rated Donald as 0.18 points more hostile than did those who descrambled neutral sentences. Analysis found these results not to be significant. Results indicated a significant interaction for the trait rating of dislikeable, females in the control group rated the trait more negatively compared to males in the control group. To provide additional context for the results in our sample, we re-analyzed data from three external samples in this multi-site project. Results from all samples suggest that the currently used methods do not produce a hostile priming effect as detected in the original Srull and Wyer (1979) study

A Multi-Site Collaboration of Hostile Priming Effects-In-Principle Acceptance version

In 1979, Srull and Wyer reported a study where a brief exposure to hostile stimuli caused participants to subsequently rate an individual as being more hostile. Srull and Wyer (1979) went on to be one of the most influential studies in social cognition: It has been cited in over 1,000 academic publications, the “Donald” vignette has been used in dozens of subsequent studies, and the results served as a foundation for subsequent priming studies that extended priming effects beyond the domain of social judgments (e.g., e.g., Bargh, Chen, & Burrows, 1996; Dijksterhuis & van Knippenberg, 1998). However, a Registered Replication Report (RRR; McCarthy et al., 2018) that contained 26 independent samples and several thousand participants did not find the predicted effect and cast doubt on whether the methods reported by Srull and Wyer would reliably produce a hostile priming effect. However, the RRR deviated from the original methods in a few ways and some criticisms of the methods were raised after the publication of the RRR. The current proposed study is intended to address these criticisms and provide a critical test of whether Srull and Wyer-esque methods can reliably produce a hostile priming effect. The current study will involve several labs who each collect an independent sample of data. Each lab will conduct a close replication of Srull and Wyer (1979) and each lab will pretest stimuli so they can conduct a conceptual replication of Srull and Wyer (1979) using stimuli that are developed specifically for their locally-available participants. Collectively, this study will test the replicability of Srull and Wyer-esque methods to produce a hostile priming effect

A Multi-Site Collaboration of Hostile Priming Effects-In-Principle Acceptance version

In 1979, Srull and Wyer reported a study where a brief exposure to hostile stimuli caused participants to subsequently rate an individual as being more hostile. Srull and Wyer (1979) went on to be one of the most influential studies in social cognition: It has been cited in over 1,000 academic publications, the “Donald” vignette has been used in dozens of subsequent studies, and the results served as a foundation for subsequent priming studies that extended priming effects beyond the domain of social judgments (e.g., e.g., Bargh, Chen, & Burrows, 1996; Dijksterhuis & van Knippenberg, 1998). However, a Registered Replication Report (RRR; McCarthy et al., 2018) that contained 26 independent samples and several thousand participants did not find the predicted effect and cast doubt on whether the methods reported by Srull and Wyer would reliably produce a hostile priming effect. However, the RRR deviated from the original methods in a few ways and some criticisms of the methods were raised after the publication of the RRR. The current proposed study is intended to address these criticisms and provide a critical test of whether Srull and Wyer-esque methods can reliably produce a hostile priming effect. The current study will involve several labs who each collect an independent sample of data. Each lab will conduct a close replication of Srull and Wyer (1979) and each lab will pretest stimuli so they can conduct a conceptual replication of Srull and Wyer (1979) using stimuli that are developed specifically for their locally-available participants. Collectively, this study will test the replicability of Srull and Wyer-esque methods to produce a hostile priming effect

Numerical and experimental demonstration of a wavelength demultiplexer design by point-defect cavity coupled to a tapered photonic crystal waveguide

We propose and experimentally demonstrate a demultiplexer with point-defect resonators and a reflection feedback mechanism in a photonic crystal waveguide (PCW). A tapered PCW has been chosen as the necessary reflector, which enhances the drop efficiency. Due to the variation of the single-mode waveguide width of the tapered PCW, spatial alteration of the effective refractive index can be achieved. This phenomenon is used to reflect back the forward propagating wave which is then coupled again to the drop channels via the resonators. High transmission efficiency to the dropout channels is numerically predicted by calculations, either in two- and three-dimensional models, and analytically described by a coupled-mode theory. Moreover, an experimental realization in the microwave regime provides confirmation that the targeted wavelengths can be properly transmitted at the drop channels with low crosstalk and relatively high efficiencies. (C) 2015 Optical Society of Americ

A Multi-Site Collaborative Study of the Hostile Priming Effect

In a now-classic study by Srull and Wyer (1979), people who were exposed to phrases with hostile content subsequently judged a man as being more hostile. And this “hostile priming effect” has had a significant influence on the field of social cognition over the subsequent decades. However, a recent multi-lab collaborative study (McCarthy et al., 2018) that closely followed the methods described by Srull and Wyer (1979) found a hostile priming effect that was nearly zero, which casts doubt on whether these methods reliably produce an effect. To address some limitations with McCarthy et al. (2018), the current multi-site collaborative study included data collected from 29 labs. Each lab conducted a close replication (total N = 2,123) and a conceptual replication (total N = 2,579) of Srull and Wyer’s methods. The hostile priming effect for both the close replication (d = 0.09, 95% CI [-0.04, 0.22], z = 1.34, p = .16) and the conceptual replication (d = 0.05, 95% CI [-0.04, 0.15], z = 1.15, p = .58) were not significantly different from zero and, if the true effects are non-zero, were smaller than what most labs could feasibly and routinely detect. Despite our best efforts to produce favorable conditions for the effect to emerge, we did not detect a hostile priming effect. We suggest that researchers should not invest more resources into trying to detect a hostile priming effect using methods like those described in Srull and Wyer (1979)