Practice, Community, and Algorithms: How YouTube Creators Learn Through Making

In this thesis, I answer the following questions: How do YouTube content creators learncontent creation through their practice and participation in communities of practice? How do these communities help creators form identity? And, lastly, how do the YouTube’s automated systems shape creators’ practice and impact their identity? To explore these questions, I observed a community of new creators to understand how creators learned about content creation from others. I interviewed 11 YouTube creators that ranged in size of viewership and experience to understand how they personally adapted their content to the platform of YouTube as they create videos. I find that creators create a situated practice drawing form a bricolage of information coming from many sources. I also find that this individual practice and communal practice in creator communities contributes to the process of identification. Both practice and identification are influenced by the strategy that YouTube puts in place through its complex automated systems and algorithms that incentivize creators to make content that is in line with the platform

A preliminary systematic review and meta-analysis of randomized-controlled trials of cognitive remediation therapy for anorexia nervosa

Cognitive remediation therapy (CRT) for anorexia nervosa (AN) was developed as an adjuvant treatment to target set-shifting and central coherence inefficiencies important in AN and to ultimately improve clinical outcomes of those with AN. The primary aim of this preliminary systematic review and meta-analysis was to determine the effect of CRT for AN relative to control treatments in randomized-controlled trials (RCTs) on neuropsychological inefficiencies at end-of-treatment. Secondary aims were to assess the effect of CRT for AN on dropout, eating-disorder-related, and other psychological outcomes at end-of-treatment. Systematic review and meta-analytic procedures were conducted in accordance with PRISMA Guidelines. RCTs evaluating CRT for AN compared to a control treatment were identified via ProQuest, PsycINFO, PubMed, and SCOPUS. Seven RCTs and one quasi-RCT of CRT for AN were included. RCT quality ratings ranged from fair (n = 3) to good (n = 4). Random-effects meta-analysis was conducted using Hedge's g. Study heterogeneity was assessed using I2 and publication bias was assessed with Begg's adjusted-rank correlation and the trim-and-fill method. CRT was not associated with improvement in central coherence compared to control treatments at end-of-treatment (g = 0.25, 95% CI = −0.35, 0.85, k = 3). Set-shifting outcomes were mixed due to heterogeneity of set-shifting measures across studies. CRT may prevent dropout; yet, more studies are needed to draw conclusions. CRT did not confer advantage over control treatments for eating-disorder-related and other psychological outcomes at end-of-treatment. Future RCTs of CRT for AN should use precise measures to assess constructs (particularly for set shifting), increase sample size, and implement longitudinal follow-up. (Word Count: 247 words)

Correlation of cosmic-ray intensity and solar activity

The present International Geophysical Year was chosen to include the most likely period of maximum activity of the sun. It is probably too early to tell whether or not the maximum of the current cycle has yet been reached, but it is already certain that the yearly average of the Zurich sunspot numbers for 1957 is much higher than ever before observed.(1) It is therefore of interest to see what has been the effect on cosmic rays

Correlation of cosmic-ray ionization measurements at high altitudes, at sea level, and neutron intensities at mountain tops

Although fluctuations in cosmic rays have been measured at sea level and high altitudes for a number of years, no serious attempt seems to have been made to correlate the two. As a result of a rather long series of balloon flights in the summer of 1951 it now becomes possible to correlate ionization measurements at high and low altitudes. Recent neutron intensity measurements during the same period by Simpson et al. permit a further comparison with this component. There seems to be a good correlation, during this period of observation, between the fluctuations as measured in (1) the ionization at 70,000 ft over North Dakota, (2) the meson component at Cheltenham, Maryland, (3) the meson component at the geomagnetic equator, and (4) the neutron component at mountain tops in Colorado and New Mexico

Eating Pathology Symptoms Inventory – Clinician Rated Version (EPSI-CRV)

The files in this record contain supplemental information about the EPSI-CRV including: a copy of the EPSI-CRV, suggested training plan, training videos with an example of completed ratings, and a list of items that were removed during the final development process.The Eating Pathology Symptoms Inventory – Clinician Rated Version (EPSI-CRV) is a semi-structured interview that was designed to assess dimensional constructs of eating-disorder psychopathology and generate current Diagnostic and Statistical Manual- Fifth Edition (DSM-5) eating-disorder diagnoses. The EPSI-CRV is based on the self-report version of the EPSI (Forbush et al., 2013). There are 13 modules (or sections) within the EPSI-CRV. Eight modules measure content that is assessed in the self-report version of the EPSI, including: Body Dissatisfaction, Binge Eating, Cognitive Restraint, Excessive Exercise, Restricting, Purging, Muscle Building, and Negative Attitudes Towards Obesity. Five additional modules are included to derive DSM-5 diagnoses. The five DSM-5 modules include: Subjective Binge Episodes, Binge Eating Disorder, Low Weight, Overvaluation of Weight and Shape, and Fear of Weight Gain. The average administration time is approximately 38 minutes. The EPSI-CRV is designed to be used by clinicians and researchers working with adults with eating disorders across a range of settings. The interview may be useful for making admissions decisions, treatment planning, and discharge planning, as well as for research studies

Evaluating associations between fitspiration and thinspiration content on Instagram and disordered-eating behaviors using ecological momentary assessment: A registered report

This is the peer reviewed version of the following article: Christensen, KA, Forbush, KT, Cushing, CC, Lejuez, CW, Fleming, KK, Swinburne Romine, RE. Evaluating associations between fitspiration and thinspiration content on Instagram and disordered-eating behaviors using ecological momentary assessment: A registered report. Int J Eat Disord. 2021; 54: 1307– 1315. https://doi.org/10.1002/eat.23518, which has been published in final form at https://doi.org/10.1002/eat.23518. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.Introduction Greater use of appearance-focused social media, such as Instagram, is associated with increased body dissatisfaction and eating disorder (ED) symptoms; however, questions remain about the mechanism connecting social media use to disordered-eating behaviors (DEBs). The proposed study evaluates how and for whom exposure to fitspiration or thinspiration on Instagram is associated with DEBs. Methods We will evaluate a hypothesized pathway from Instagram use to disordered-eating mediated by negative affect. We will test how individual differences in internalized weight stigma, trait self-esteem, and trait self-comparison moderate the pathway from social media use to negative affect. We will recruit 175 undergraduate women who report engaging in DEBs on average at least once per week over the past 3 months. Participants will complete a 7-day ecological momentary assessment protocol, during which they will report their Instagram use, affect, and engagement in DEBs. Results Multi-level modeling will be used to assess moderated mediation. Results from this study will provide increased specificity about how Instagram usage is linked to eating pathology and who may be most vulnerable to experiencing distress. Discussion Information about negative affect from Instagram and engagement in DEBs could contribute to the development of Just-In-Time Interventions for problematic social media use