LOS ANGELES, Jan. 8 – Leslie Van Houten will face psychiatric testing in hopes of establishing her mental condition during the Leno and Rosemary LaBianca murders Aug. 10.

The examination request was made by her attorney, Marvin Part, before Judge William B. Keene Tuesday in Los Angeles. Part said his request was based on conversations he’s had with Miss Van Houten.

Atty. Part emphasized that he is more interested in Miss Van Houten’s condition at the time of the murders, rather than her mental condition at present.

Miss Van Houten entered a plea of not guilty before Judge Keene, Dec. 22.

This was just two days after Part became her attorney.

Atty. Part was assigned Miss Van Houten’s attorney after Atty. Donald Barnett, originally hired by Miss Van Houten, could no longer handle the case.

Miss Van Houten’s not guilty plea is against two counts of murder and one count of conspiracy. The LaBiancas were murdered in the Los Feliz district of Los Angeles the night after actress Sharon Tate and four other persons were killed in Benedict Canyon.

Linda Kassabian also entered a not guilty plea, at the same time as Miss Van Houten’s plea. Charles Manson, 35, was arraigned the day Miss Van Houten entered her plea. He is said to be the leader of the hippie cult charged with seven murders.

Slain the night before the LaBiancas were Miss Tate, 26; Steve Parent, 18, of El Monte; Jay Sebring, 35, a hair stylist; Voityck Frykowsky, 32, the Polish movie maker; and Abigail Folger, 26, the coffee heiress.

Miss Van Houten was first indicted under the name of Leslie Sankston, and also used the name Lovella Alexandrin while being held in Sybil Brand Institute for Women in early December.

Miss Van Houten is a 1967 graduate of Monrovia High School. She was an active student her freshman year, serving as a homecoming princess and treasurer of her freshman class.

She was a member of the Monrovia’s Jobs Daughters. Monrovians who know her say “she was a nice girl.”

Also being charged in the Tate-LaBianca murders are Susan Atkins, 21, of San Jose; Patricia Krenwinkel, 22, of Mobile, Ala.; and Charles Watson of McKinney, Tex.

Miss Krenwinkel and Watson are expected to be returned to Los Angeles to face the charges. The governor of Texas ordered Watson’s return Monday, but his attorney will appeal the order.