Question:
Lionel Barrymore was born Lionel Herbert Blythe in Philadelphia, the son of actors Georgiana Drew Barrymore and Maurice Barrymore (born Herbert Arthur Chamberlayne Blyth). He was the elder brother of Ethel and John Barrymore, the uncle of John Drew Barrymore and Diana Barrymore and the great-uncle of Drew Barrymore, among other members of the Barrymore family. He attended private schools as a child, including the Art Students League of New York. While raised a Roman Catholic, Barrymore attended the Episcopal Academy in Philadelphia.
Reluctant to follow his parents' career, Barrymore appeared together with his formidable grandmother Louisa Lane Drew on tour and in a stage production of The Rivals at the age of 15. He later recounted that "I didn't want to act. I wanted to paint or draw. The theater was not in my blood, I was related to the theater by marriage only; it was merely a kind of in-law of mine I had to live with." Nevertheless, he soon found success on stage in character roles and continued to act, although he still wanted to become a painter and also to compose music. He appeared on Broadway in his early twenties with his uncle John Drew Jr. in such plays as The Second in Command (1901) and The Mummy and the Hummingbird (1902), the latter of which won him critical acclaim. Both were produced by Charles Frohman, who produced other plays for Barrymore and his siblings, John and Ethel. The Other Girl in 1903-04 was a long-running success for Barrymore. In 1905, he appeared with John and Ethel in a pantomime, starring as the title character in Pantaloon and playing another character in the other half of the bill, Alice Sit-by-the-Fire. In 1906, after a series of disappointing appearances in plays, Barrymore and his first wife, the actress Doris Rankin, left their stage careers and travelled to Paris, where he trained as an artist. He did not achieve success as a painter, and in 1909 he returned to the US. In December of that year, he returned to the stage in The Fires of Fate, in Chicago, but left the production later that month after suffering an attack of nerves about the forthcoming New York opening. The producers gave appendicitis as the reason for his sudden departure. Nevertheless, he was soon back on Broadway in The Jail Bird in 1910 and continued his stage career with several more plays. He also joined his family troupe, from 1910, in their vaudeville act, where he was happy not to worry as much about memorizing lines. From 1912 to 1917, Barrymore was away from the stage again while he established his film career, but after the First World War, he had several successes on Broadway, where he established his reputation as a dramatic and character actor, often performing together with his wife. He proved his talent in such plays as Peter Ibbetson (1917) (with brother John), The Copperhead (1918) (with Doris), The Jest (1919) (again with John) and The Letter of the Law (1920). Lionel gave a short-lived performance as MacBeth in 1921 opposite veteran actress Julia Arthur as Lady MacBeth, but the production encountered strongly negative criticism. His last stage success was in Laugh, Clown, Laugh, in 1923, with his second wife, Irene Fenwick; they met while acting together in The Claw the previous year, and after they fell in love he divorced his first wife. He also received negative notices in three productions in a row in 1925. After these, he never again appeared on stage.
Answer this question using a quote from the text above:

What was the name of the play he was in?

Answer:
The Rivals

Question:
Raymond Bernard Cattell (20 March 1905 - 2 February 1998) was a British and American psychologist, known for his psychometric research into intrapersonal psychological structure. His work also explored the basic dimensions of personality and temperament, the range of cognitive abilities, the dynamic dimensions of motivation and emotion, the clinical dimensions of abnormal personality, patterns of group syntality and social behavior, applications of personality research to psychotherapy and learning theory, predictors of creativity and achievement, and many multivariate research methods including the refinement of factor analytic methods for exploring and measuring these domains. Cattell authored, co-authored, or edited almost 60 scholarly books, more than 500 research articles, and over 30 standardized psychometric tests, questionnaires, and rating scales. According to a widely cited ranking, Cattell was the 16th most eminent, 7th most cited in the scientific journal literature, and among the most productive, but controversial psychologists of the 20th century.
Cattell noted that in the hard sciences such as chemistry, physics, astronomy, as well as in medical science, unsubstantiated theories were historically widespread until new instruments were developed to improve scientific observation and measurement. In the 1920s, Cattell worked with Charles Spearman who was developing the new statistical technique of factor analysis in his effort to understand the basic dimensions and structure of human abilities. Factor analysis became a powerful tool to help uncover the basic dimensions underlying a confusing array of surface variables within a particular domain. Factor analysis was built upon the earlier development of the correlation coefficient, which provides a numerical estimate of the degree to which variables are "co-related". For example, if "frequency of exercise" and "blood pressure level" were measured on a large group of people, then intercorrelating these two variables would provide a quantitative estimate of the degree to which "exercise" and "blood pressure" are directly related to each other. Factor analysis performs complex calculations on the correlation coefficients among the variables within a particular domain (such as cognitive ability or personality trait constructs) to determine the basic, unitary factors underlying the particular domain. While working at the University of London with Spearman exploring the number and nature of human abilities, Cattell postulated that factor analysis could be applied to other areas beyond the domain of abilities. In particular, Cattell was interested in exploring the basic taxonomic dimensions and structure of human personality. He believed that if exploratory factor analysis were applied to a wide range of measures of interpersonal functioning, the basic dimensions within the domain of social behavior could be identified. Thus, factor analysis could be used to discover the fundamental dimensions underlying the large number of surface behaviors, thereby facilitating more effective research. As noted above, Cattell made many important innovative contributions to factor analytic methodology, including the Scree Test to estimate the optimal number of factors to extract, the "Procrustes" oblique rotation strategy, the Coefficient of Profile Similarity, P-technique factor analysis, dR-technique factor analysis, the Taxonome program, as well the Rotoplot program for attaining maximum simple structure solutions. In addition, many eminent researchers received their grounding in factor analytic methodology under the guidance of Cattell, including Richard Gorsuch, an authority on exploratory factor analytic methods.
Answer this question using a quote from the text above:

What will it provide?

Answer:
then intercorrelating these two variables would provide a quantitative estimate of the degree to which "exercise" and "blood pressure" are directly related to each other.