Excerpt from Wikipedia, topic: Illusory Truth Effect: ¹

“The illusory truth effect (also known as the truth effect or the reiteration effect) is the tendency to believe information to be correct after repeated exposure. This phenomenon was first identified in a 1977 study at Villanova University and Temple University. When truth is assessed, people rely on whether the information is in line with their understanding or if it feels familiar. The first condition is logical as people compare new information with what they already know to be true. Repetition makes statements easier to process relative to new, unrepeated, statements, leading people believe that the repeated conclusion is more truthful.”

Excerpt from an address by Boyd K. Packer, seminar for new mission presidents on June 25, 1982: ²

“It is not unusual to have a missionary say, ‘How can I bear testimony until I get one? How can I testify that God lives, that Jesus is the Christ, and that the gospel is true? If I do not have such a testimony, would that not be dishonest?’ Oh, if I could teach you this one principle: a testimony is to be found in the bearing of it!”

Excerpt from an April 2008 General Conference address by Dallin H. Oaks: ³

“Another way to seek a testimony seems astonishing when compared with the methods of obtaining other knowledge. We gain or strengthen a testimony by bearing it. Someone even suggested that some testimonies are better gained on the feet bearing them than on the knees praying for them.”

Excerpt from a October 2014 General Conference address by Neil L. Andersen: ⁴

“A testimony of the Prophet Joseph Smith can come differently to each of us. It may come as you kneel in prayer, asking God to confirm that he was a true prophet. It may come as you read the Prophet’s account of the First Vision. A testimony may distill upon your soul as you read the Book of Mormon again and again. It may come as you bear your own testimony of the Prophet or as you stand in the temple and realize that through Joseph Smith the holy sealing power was restored to the earth.22 With faith and real intent, your testimony of the Prophet Joseph Smith will strengthen. The constant water balloon volleys from the sidelines may occasionally get you wet, but they need never, never extinguish your burning fire of faith.

To the youth listening today or reading these words in the days ahead, I give a specific challenge: Gain a personal witness of the Prophet Joseph Smith. Let your voice help fulfill Moroni’s prophetic words to speak good of the Prophet. Here are two ideas: First, find scriptures in the Book of Mormon that you feel and know are absolutely true. Then share them with family and friends in family home evening, seminary, and your Young Men and Young Women classes, acknowledging that Joseph was an instrument in God’s hands. Next, read the testimony of the Prophet Joseph Smith in the Pearl of Great Price or in this pamphlet, now in 158 languages. You can find it online at LDS.org or with the missionaries. This is Joseph’s own testimony of what actually occurred. Read it often. Consider recording the testimony of Joseph Smith in your own voice, listening to it regularly, and sharing it with friends. Listening to the Prophet’s testimony in your own voice will help bring the witness you seek.”

See also:

• The Illusory Truth Effect – wasmormon.org

Illusory Truth Effect