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. Author manuscript; available in PMC: 2020 Dec 30.
Published in final edited form as: Annu Rev Clin Psychol. 2018 May 7;14:119–157. doi: 10.1146/annurev-clinpsy-050817-084847

Table 3.

SCZ PRS and Cognition.

Phenotypes Phenotypes and Study Reference N Association and Effect size*
IQ Metrics and Neurocognitive Function Neurocognitive Performance (Hatzimanolis et al., 2015)* 1,079 Continuous performance and spatial N-back: ~0.00275. No significant association with IQ or verbal n-back.
Neurocognition and social cognition (Germine et al., 2016)* 4303 (8 – 21y); Replication: 695 (18 – 35y) Verbal reasoning and emotion identification speed: 0.003 – 0.005 NS: 36 other accuracy and speed indices.
Cognitive function and Education (Hagenaars et al., 2016) 36,035–112,067 Negative associations with verbal-numerical reasoning, reaction time, memory: B=−0.006 to-0.062; positive association with educational attainment: B=0.025.
50 triats - personality, cognition, etc. (Krapohl et al., 2016) No significant associations following multiple testing. But nominal positive correlations with English and negatively correlated with Autism Quotient: Attention to Detail.
Cognitive function in older adults (Liebers et al., 2016)* 8, 616 Total Cognitive Function, Attention/Language, Verbal memory: 0.0004–0.0008
Composite g and subfacets: memory digit, vocabulary, verbal, reaction time (SCZ-PRS x MDD) (Whalley et al., 2016)* Sample 1: 16,764 CON; 2,587 MDD Sample 2: 27,476 CON; 6,049 MDD Composite g: 0.0032 – 0.0062 (stronger in MDD);
G Subfacets 0.0002 – 0.0109
Cognition and learning, social and communication, emotion and mood regulation, behavior, age 4–9 (Riglin et al., 2017)* 5,100 – 6,952 Lower performance IQ and worse language intelligibility and fluency: up to 0.003
Executive Function (Benca et al., 2017)* 386 Positive correlation with update specific latent variable: r < 0.2 (nom. Sig.). Negatively associated with IQ,: up to 0.01.
Emotion recognition (Coleman et al., 2017)* 4,097 8 year old children No association: r2=0.0001 – 0.0011
Psychosis cognitive and physiological endophenotypes (Ranlund et al., 2017)* Total: 1,437–3,089 drawn from SCZ: 1,087
SCZ 1st-degree relative: 822 CON: 2,333
SCZ>SCZrelatives>CON. Worse performance on block design: 0.002.. NS: digit span, RAVLT.
SCZ and Cog performance (Wang et al., 2017b)* 1,130 Taiwanese SCZ Not associated with SCZ: 0.0008. Lack of association PGC2 not used to test for association with cognitive phenotypes. Cognitive associations reported with PGC1.
Creativity Creativity (Power et al., 2015)* 86, 292 Increased creativity: up to 0.055

Studies only include those using summary statistics from (Schizophrenia Working Group of the Psychiatric Genomics, 2014). Unless otherwise noted, effect size is represented as Nagelkerke’s Pseudo R2 (multiply by 100 to obtain %R2); r = correlation, OR = Odds-ration, B = beta coefficient, AUC = Area Under the Curve. EA = European ancestry. AA = African ancestry. NS= non significant. When pearson’s r, OR, or d were reported, we estimated r2.

*

indicates study with % of variance explained included in Figure 2.