This paper illustrates that Guildford’s researches highlighted that scores on intelligence tests cannot be taken as a unidirectional classification that some scholars have claimed point out the supremacy of some individuals, groups of individuals over others. Guilford demonstrated that the most inventive individuals might score lesser on a normal IQ test because of their method to the complications, which produces a bigger amount of likely resolutions some of which are innovative. Therefore, Guilford`s research permits superior obligation of the assortment of human intelligence and capabilities, without accrediting diverse value to dissimilar individuals. Thus, this shows the contributions that Guildford had on research concerning the modern human intelligence and creativity. For instance, he related different intelligent with innovativeness assigning it numerous attributes, such as fluency, which is the capability to generate a considerable number of notions or solutions to problems in a short time given. Accordingly, there is flexibility, which is the capacity to propose simultaneously a variability of methods or strategies to a specific complication. Another related feature includes uniqueness, which is the capability to generate new and primary concepts as well as amplification aspect that enables a person to classify and arrange the facts of an idea ahead and perform it successfully. The concept of fluid and crystallized intelligence Fluid intelligence is the ability of an individual to think or reason cogently and solve complications in a given circumstance, sovereign of attained information. Fluid intelligence is the capacity to examine unique issues, recognize forms and associations that underpin issues and the extrapolation of this using rationality. Research shows that this intelligence is vital for all coherent problems resolving including sciences, mathematical, and nominal problem-solving. Fluid intelligence encompasses inductive cognitive and empirical intellectual. On the other hand, crystallized intelligence is the capacity to employ abilities, understanding, as well as expertise. It does not associate with memory or facts. however, it does depend on retrieving information from the long-term celebration. Research shows that crystallized intelligence is one`s lifespan of intellectual accomplishment, as illustrated fundamentally over one`s terminology and general understanding. This advances yet, with age as experiences tend to increase an individual`s indulgence. In short, candied intellect is the accrued information, and terminology achieved from knowledge establishments and daily life. it also contains the application of skills and knowledge to solving problems. Conversely, it is illustrated that crystallized intelligence can change. This is because every new entity a person’s studies enhance their candied intellect. This type of understanding can alter by addition, deduction, or intensification where previous understanding is reviewed. It is noted that crystallized intelligence has not influence on fluid intelligence, although a great fluid intelligence can affect crystalized intelligence because a bigger ability to learn affects the amount a person knows. Therefore, both two forms of intelligence crystalized and fluid in most cases have the tendency to increase progressively all through babyhood and teenage years.